tests server sockfilt win32

tests/server/sockfilt.c

@@ -176,7 +176,7 @@ static ssize_t read_wincon(int fd, void *buf, size_t count)
     success = ReadFile(handle, buf, curlx_uztoul(count), &rcount, NULL);
   }
   if(success) {
-    return rcount;
+    return (ssize_t)rcount;
   }
 
   errno = (int)GetLastError();
@@ -211,7 +211,7 @@ static ssize_t write_wincon(int fd, const void *buf, size_t count)
     success = WriteFile(handle, buf, curlx_uztoul(count), &wcount, NULL);
   }
   if(success) {
-    return wcount;
+    return (ssize_t)wcount;
   }
 
   errno = (int)GetLastError();
@@ -665,15 +665,15 @@ static int select_ws(int nfds, fd_set *readfds, fd_set *writefds,
   }
 
   /* allocate internal array for the internal data */
-  data = calloc(nfds, sizeof(struct select_ws_data));
+  data = calloc((size_t)nfds, sizeof(struct select_ws_data));
   if(!data) {
     CloseHandle(abort);
     errno = ENOMEM;
     return -1;
   }
 
   /* allocate internal array for the internal event handles */
-  handles = calloc(nfds + 1, sizeof(HANDLE));
+  handles = calloc((size_t)nfds + 1, sizeof(HANDLE));
   if(!handles) {
     CloseHandle(abort);
     free(data);