lib: fix compiler warnings after de4de4e3c7c

Visual C++ now complains about implicitly casting time_t (64-bit) to
long (32-bit). Fix this by changing some variables from long to time_t,
or explicitly casting to long where the public interface would be
affected.

Closes #1131

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/asyn-thread.c b/lib/asyn-thread.c
index 7cce01aac..0c5abaefe 100644
--- a/lib/asyn-thread.c
+++ b/lib/asyn-thread.c
@@ -169,7 +169,7 @@ struct thread_sync_data {
 struct thread_data {
   curl_thread_t thread_hnd;
   unsigned int poll_interval;
-  long interval_end;
+  time_t interval_end;
   struct thread_sync_data tsd;
 };
 
@@ -525,7 +525,7 @@ CURLcode Curl_resolver_is_resolved(struct connectdata *conn,
   }
   else {
     /* poll for name lookup done with exponential backoff up to 250ms */
-    long elapsed = Curl_tvdiff(Curl_tvnow(), data->progress.t_startsingle);
+    time_t elapsed = Curl_tvdiff(Curl_tvnow(), data->progress.t_startsingle);
     if(elapsed < 0)
       elapsed = 0;