Fix compiler warning: loop without body

ares/ares_init.c

@@ -1383,25 +1383,29 @@ static const char *try_option(const char *p, const char *q, const char *opt)
 static char *try_config(char *s, const char *opt)
 {
   size_t len;
-  ssize_t i;
-  ssize_t j;
   char *p;
+  char *q;
 
   if (!s || !opt)
     /* no line or no option */
     return NULL;
 
   /* trim line comment */
-  for (i = 0; s[i] && s[i] != '#'; ++i);
-  s[i] = '\0';
+  p = s;
+  while (*p && (*p != '#'))
+    p++;
+  *p = '\0';
 
   /* trim trailing whitespace */
-  for (j = i-1; j >= 0 && ISSPACE(s[j]); --j);
-  s[++j] = '\0';
+  q = p - 1;
+  while ((q >= s) && ISSPACE(*q))
+    q--;
+  *++q = '\0';
 
   /* skip leading whitespace */
-  for (i = 0; s[i] && ISSPACE(s[i]); ++i);
-  p = &s[i];
+  p = s;
+  while (*p && ISSPACE(*p))
+    p++;
 
   if (!*p)
     /* empty line */

tests/libtest/lib540.c

@@ -44,6 +44,7 @@ static int loop(CURLM *cm, const char* url, const char* userpwd,
                 struct curl_slist *headers)
 {
   CURLMsg *msg;
+  CURLMcode code;
   long L;
   int M, Q, U = -1;
   fd_set R, W, E;
@@ -52,7 +53,10 @@ static int loop(CURLM *cm, const char* url, const char* userpwd,
   init(cm, url, userpwd, headers);
 
   while (U) {
-    while (CURLM_CALL_MULTI_PERFORM == curl_multi_perform(cm, &U));
+
+    do {
+      code = curl_multi_perform(cm, &U);
+    } while (code == CURLM_CALL_MULTI_PERFORM);
 
     if (U) {
       FD_ZERO(&R);

tests/libtest/lib560.c

@@ -24,6 +24,7 @@ int test(char *URL)
 {
   CURL *http_handle;
   CURLM *multi_handle;
+  CURLMcode code;
 
   int still_running; /* keep number of running handles */
 
@@ -48,8 +49,9 @@ int test(char *URL)
   curl_multi_add_handle(multi_handle, http_handle);
 
   /* we start some action by calling perform right away */
-  while(CURLM_CALL_MULTI_PERFORM ==
-        curl_multi_perform(multi_handle, &still_running));
+  do {
+    code = curl_multi_perform(multi_handle, &still_running);
+  } while(code == CURLM_CALL_MULTI_PERFORM);
 
   while(still_running) {
     struct timeval timeout;
@@ -84,8 +86,9 @@ int test(char *URL)
     case 0:
     default:
       /* timeout or readable/writable sockets */
-      while(CURLM_CALL_MULTI_PERFORM ==
-            curl_multi_perform(multi_handle, &still_running));
+      do {
+        code = curl_multi_perform(multi_handle, &still_running);
+      } while(code == CURLM_CALL_MULTI_PERFORM);
       break;
     }
   }

tests/server/sockfilt.c

@@ -837,6 +837,7 @@ int main(int argc, char *argv[])
   curl_socket_t msgsock = CURL_SOCKET_BAD;
   int wrotepidfile = 0;
   char *pidname= (char *)".sockfilt.pid";
+  bool juggle_again;
   int rc;
   int error;
   int arg=1;
@@ -1001,7 +1002,9 @@ int main(int argc, char *argv[])
   if(!wrotepidfile)
     goto sockfilt_cleanup;
 
-  while(juggle(&msgsock, sock, &mode));
+  do {
+    juggle_again = juggle(&msgsock, sock, &mode);
+  } while(juggle_again);
 
 sockfilt_cleanup: