Checking first char for null is more efficient than strlen.

src/librc/librc-depend.c

@@ -151,7 +151,7 @@ rc_depinfo_t *rc_deptree_load (void)
 		{
 			/* Sanity */
 			e = get_shell_value (p);
-			if (! e || strlen (e) == 0)
+			if (! e || *e == '\0')
 				goto next;
 
 			if (! deptree)
@@ -176,7 +176,7 @@ rc_depinfo_t *rc_deptree_load (void)
 
 		/* Sanity */
 		e = get_shell_value (p);
-		if (! e || strlen (e) == 0)
+		if (! e || *e == '\0')
 			goto next;
 
 		if (! deptype)

src/librc/librc-misc.c

@@ -196,7 +196,7 @@ char **rc_config_load (const char *file)
 			do {
 				/* Bash variables are usually quoted */
 				token = strsep (&line, "\"\'");
-			} while ((token) && (strlen (token) == 0));
+			} while (token && *token == '\0');
 
 		/* Drop a newline if that's all we have */
 		if (token) {