inp_search_closing_paren(), rewrite

src/frontend/inpcom.c

@@ -1792,14 +1792,14 @@ inp_search_closing_paren1(char *s)
 {
     int count = 1;
     // assert(*s == '(')
-    while (*s != '\0') {
+    while (*s) {
         s++;
         if (*s == '(')
             count++;
         if (*s == ')')
             count--;
         if (count == 0)
-            break;
+            return s;
     }
     if (count != 0)
         return NULL;
@@ -1812,14 +1812,14 @@ inp_search_for_closing_paren2(char *s)
 {
     int count = 0;
     // assert(*s == '(')
-    while (*s != '\0') {
+    while (*s) {
         if (*s == '(')
             count++;
         if (*s == ')')
             count--;
         s++;
         if (count == 0)
-            break;
+            return s;
     }
     if (count != 0)
         return NULL;