src: Fix return types of .stateInitialize callbacks

The virStateDriver struct has .stateInitialize callback which is
declared to return virDrvStateInitResult enum. But some drivers
return a plain int in their implementation which is UB.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>

src/bhyve/bhyve_driver.c

@@ -1176,7 +1176,7 @@ bhyveStateCleanup(void)
     return 0;
 }
 
-static int
+static virDrvStateInitResult
 bhyveStateInitialize(bool privileged,
                      const char *root,
                      bool monolithic G_GNUC_UNUSED,

src/ch/ch_driver.c

@@ -1365,7 +1365,8 @@ static int chStateCleanup(void)
     return 0;
 }
 
-static int chStateInitialize(bool privileged,
+static virDrvStateInitResult
+chStateInitialize(bool privileged,
                   const char *root,
                   bool monolithic G_GNUC_UNUSED,
                   virStateInhibitCallback callback G_GNUC_UNUSED,

src/interface/interface_backend_netcf.c

@@ -86,7 +86,7 @@ virNetcfDriverStateDispose(void *obj)
 }
 
 
-static int
+static virDrvStateInitResult
 netcfStateInitialize(bool privileged,
                      const char *root,
                      bool monolithic G_GNUC_UNUSED,

src/interface/interface_backend_udev.c

@@ -1091,7 +1091,7 @@ udevInterfaceIsActive(virInterfacePtr ifinfo)
 static int
 udevStateCleanup(void);
 
-static int
+static virDrvStateInitResult
 udevStateInitialize(bool privileged,
                     const char *root,
                     bool monolithic G_GNUC_UNUSED,

src/libxl/libxl_driver.c

@@ -645,7 +645,7 @@ libxlAddDom0(libxlDriverPrivate *driver)
     return ret;
 }
 
-static int
+static virDrvStateInitResult
 libxlStateInitialize(bool privileged,
                      const char *root,
                      bool monolithic G_GNUC_UNUSED,

src/lxc/lxc_driver.c

@@ -1429,7 +1429,8 @@ lxcSecurityInit(virLXCDriverConfig *cfg)
 }
 
 
-static int lxcStateInitialize(bool privileged,
+static virDrvStateInitResult
+lxcStateInitialize(bool privileged,
                    const char *root,
                    bool monolithic G_GNUC_UNUSED,
                    virStateInhibitCallback callback G_GNUC_UNUSED,

src/network/bridge_driver.c

@@ -576,7 +576,7 @@ firewalld_dbus_signal_callback(GDBusConnection *connection G_GNUC_UNUSED,
  *
  * Initialization function for the QEMU daemon
  */
-static int
+static virDrvStateInitResult
 networkStateInitialize(bool privileged,
                        const char *root,
                        bool monolithic G_GNUC_UNUSED,

src/node_device/node_device_udev.c

@@ -2229,7 +2229,7 @@ mdevctlEventHandleCallback(GFileMonitor *monitor G_GNUC_UNUSED,
 }
 
 
-static int
+static virDrvStateInitResult
 nodeStateInitialize(bool privileged,
                     const char *root,
                     bool monolithic G_GNUC_UNUSED,

src/nwfilter/nwfilter_driver.c

@@ -208,7 +208,7 @@ nwfilterStateCleanup(void)
  *
  * Initialization function for the QEMU daemon
  */
-static int
+static virDrvStateInitResult
 nwfilterStateInitialize(bool privileged,
                         const char *root,
                         bool monolithic G_GNUC_UNUSED,

src/qemu/qemu_driver.c

@@ -546,7 +546,7 @@ qemuDomainFindMaxID(virDomainObj *vm,
  *
  * Initialization function for the QEMU daemon
  */
-static int
+static virDrvStateInitResult
 qemuStateInitialize(bool privileged,
                     const char *root,
                     bool monolithic G_GNUC_UNUSED,

src/remote/remote_driver.c

@@ -174,7 +174,7 @@ static void make_nonnull_domain_snapshot(remote_nonnull_domain_snapshot *snapsho
 /* Helper functions for remoteOpen. */
 
 
-static int
+static virDrvStateInitResult
 remoteStateInitialize(bool privileged G_GNUC_UNUSED,
                       const char *root G_GNUC_UNUSED,
                       bool monolithic,

src/secret/secret_driver.c

@@ -488,7 +488,7 @@ secretStateCleanup(void)
 }
 
 
-static int
+static virDrvStateInitResult
 secretStateInitialize(bool privileged,
                       const char *root,
                       bool monolithic G_GNUC_UNUSED,

src/storage/storage_driver.c

@@ -239,7 +239,7 @@ storageDriverAutostart(void)
  *
  * Initialization function for the Storage Driver
  */
-static int
+static virDrvStateInitResult
 storageStateInitialize(bool privileged,
                        const char *root,
                        bool monolithic G_GNUC_UNUSED,

src/vz/vz_driver.c

@@ -4068,7 +4068,7 @@ vzStateCleanup(void)
     return 0;
 }
 
-static int
+static virDrvStateInitResult
 vzStateInitialize(bool privileged,
                   const char *root,
                   bool monolithic G_GNUC_UNUSED,