Make error wording more consistent

Author: alvherre

src/backend/postmaster/postmaster.c

@@ -908,7 +908,8 @@ PostmasterMain(int argc, char *argv[])
 			/* syntax error in list */
 			ereport(FATAL,
 					(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
-					 errmsg("invalid list syntax for \"listen_addresses\"")));
+					 errmsg("invalid list syntax in parameter \"%s\"",
+							"listen_addresses")));
 		}
 
 		foreach(l, elemlist)
@@ -1005,7 +1006,8 @@ PostmasterMain(int argc, char *argv[])
 			/* syntax error in list */
 			ereport(FATAL,
 					(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
-			 errmsg("invalid list syntax for \"unix_socket_directories\"")));
+					 errmsg("invalid list syntax in parameter \"%s\"",
+							"unix_socket_directories")));
 		}
 
 		foreach(l, elemlist)