Fixed some compiler warnings with gcc

lib/hostip.c

@@ -540,8 +540,7 @@ int Curl_resolv_timeout(struct connectdata *conn,
   unsigned int prev_alarm=0;
   struct SessionHandle *data = conn->data;
 #endif /* USE_ALARM_TIMEOUT */
-
-  int rc = CURLRESOLV_ERROR; /* error by default */
+  int rc;
 
   *entry = NULL;
 
@@ -562,7 +561,7 @@ int Curl_resolv_timeout(struct connectdata *conn,
       if(sigsetjmp(curl_jmpenv, 1)) {
         /* this is coming from a siglongjmp() after an alarm signal */
         failf(data, "name lookup timed out");
-        return rc;
+        return CURLRESOLV_ERROR;
       }
 
     /*************************************************************

lib/http.c

@@ -591,6 +591,9 @@ http_output_auth(struct connectdata *conn,
         if(result)
           return result;
       }
+#else
+      (void)request;
+      (void)path;
 #endif
       if(auth) {
         infof(data, "Proxy auth using %s with user '%s'\n",

tests/libtest/lib553.c

@@ -45,7 +45,7 @@ static char buf[SIZE_HEADERS + 100];
 int test(char *URL)
 {
   CURL *curl;
-  CURLcode res;
+  CURLcode res = CURLE_FAILED_INIT;
   int i;
   struct curl_slist *headerlist=NULL, *hl;
 

tests/server/resolve.c

@@ -71,7 +71,7 @@ const char *serverlogfile=""; /* for a util.c function we don't use */
 int main(int argc, char *argv[])
 {
   int arg=1;
-  char *host;
+  const char *host = NULL;
   int rc;
 
   while(argc>arg) {

tests/server/sockfilt.c

@@ -406,13 +406,13 @@ static bool juggle(curl_socket_t *sockfdp,
   fd_set fds_read;
   fd_set fds_write;
   fd_set fds_err;
-  curl_socket_t sockfd;
-  curl_socket_t maxfd;
+  curl_socket_t sockfd = CURL_SOCKET_BAD;
+  curl_socket_t maxfd = CURL_SOCKET_BAD;
   ssize_t rc;
   ssize_t nread_socket;
   ssize_t bytes_written;
   ssize_t buffer_len;
-  int error;
+  int error = 0;
 
  /* 'buffer' is this excessively large only to be able to support things like
     test 1003 which tests exceedingly large server response lines */

tests/server/sws.c

@@ -490,7 +490,7 @@ static int ProcessRequest(struct httprequest *req)
 static void storerequest(char *reqbuf, ssize_t totalsize)
 {
   int res;
-  int error;
+  int error = 0;
   ssize_t written;
   ssize_t writeleft;
   FILE *dump;
@@ -550,7 +550,7 @@ static int get_request(curl_socket_t sock, struct httprequest *req)
   char *reqbuf = req->reqbuf;
   ssize_t got = 0;
 
-  char *pipereq;
+  char *pipereq = NULL;
   int pipereq_length = 0;
 
   if(req->pipelining) {
@@ -655,7 +655,7 @@ static int send_doc(curl_socket_t sock, struct httprequest *req)
   bool persistant = TRUE;
   bool sendfailure = FALSE;
   size_t responsesize;
-  int error;
+  int error = 0;
   int res;
 
   static char weare[256];

tests/server/util.c

@@ -235,7 +235,7 @@ int write_pidfile(const char *filename)
 void set_advisor_read_lock(const char *filename)
 {
   FILE *lockfile;
-  int error;
+  int error = 0;
   int res;
 
   do {
@@ -257,7 +257,7 @@ void set_advisor_read_lock(const char *filename)
 
 void clear_advisor_read_lock(const char *filename)
 {
-  int error;
+  int error = 0;
   int res;
 
   do {