Given code like if (foo) free (foo); remove the useless "if (foo) " part.

Likewise, given if (foo != NULL) free (foo); remove the useless "if" test.

* proxy/libvirt_proxy.c: Remove unnecessary "if" test before free.
* python/generator.py: Likewise.
* qemud/qemud.c: Likewise.
* src/buf.c: Likewise.
* src/conf.c: Likewise.
* src/hash.c: Likewise.
* src/iptables.c: Likewise.
* src/libvirt.c: Likewise.
* src/openvz_conf.c: Likewise.
* src/qemu_conf.c: Likewise.
* src/qemu_driver.c: Likewise.
* src/remote_internal.c: Likewise.
* src/test.c: Likewise.
* src/virsh.c: Likewise.
* src/virterror.c: Likewise.
* src/xen_internal.c: Likewise.
* src/xen_unified.c: Likewise.
* src/xend_internal.c: Likewise.
* src/xm_internal.c: Likewise.
* src/xml.c: Likewise.
* src/xmlrpc.c: Likewise.
* src/xs_internal.c: Likewise.
* tests/testutils.c: Likewise.
* tests/xencapstest.c: Likewise.
* tests/xmconfigtest.c: Likewise.

tests/testutils.c

@@ -83,8 +83,7 @@ virtTestRun(const char *title, int nloops, int (*body)(const void *data), const
     else
         fprintf(stderr, "%-50s ... FAILED\n", title);
 
-    if (ts)
-        free(ts);
+    free(ts);
     return ret;
 }
 

tests/xencapstest.c

@@ -62,8 +62,7 @@ static int testCompareFiles(const char *hostmachine,
 
  fail:
 
-  if (actualxml)
-    free(actualxml);
+  free(actualxml);
   if (fp1)
     fclose(fp1);
   if (fp2)

tests/xmconfigtest.c

@@ -153,8 +153,7 @@ static int testCompareFormatXML(const char *xmcfg_rel, const char *xml_rel,
  fail:
     if (conf)
         virConfFree(conf);
-    if (gotxml)
-        free(gotxml);
+    free(gotxml);
 
     if (conn) {
         conn->privateData = old_priv;