pacman/query.c : return after a query on all packages.

Previously, the following error was displayed even after a valid
and successful query operation on all packages,
like -Q , -Ql, -Qi, -Qil :
no targets specified (use -h for help)

Signed-off-by: Chantry Xavier <shiningxc@gmail.com>

src/pacman/query.c

@@ -400,6 +400,7 @@ int pacman_query(alpm_list_t *targets)
 				printf("%s %s\n", pkgname, pkgver);
 			}
 		}
+		return(0);
 	}
 
 	/* Second: operations that require target(s) */