Add missing function parameter documentation

src/libvirt.c

@@ -10939,7 +10939,10 @@ error:
 /**
  * virConnectCompareCPU:
  * @conn: virConnect connection
- * @xml: XML describing the CPU to compare with host CPU
+ * @xmlDesc: XML describing the CPU to compare with host CPU
+ * @flags: currently unused, pass 0
+ *
+ * Compares the given CPU description with the host CPU
  *
  * Returns comparison result according to enum virCPUCompareResult
  */

src/util/virterror.c

@@ -291,6 +291,7 @@ virGetLastError(void)
 
 /**
  * virSetError:
+ * @newerr: previously saved error object
  *
  * Set the current error from a previously saved error object
  *