Revert "CLOCK_FREQ is a 64-bits quantity as mtime_t"

This reverts commit df65d657.

include/vlc_config.h

@@ -38,7 +38,7 @@
  * General configuration
  *****************************************************************************/
 
-#define CLOCK_FREQ (UINT64_C(1000000))
+#define CLOCK_FREQ 1000000
 
 
 /* When creating or destroying threads in blocking mode, delay to poll thread

modules/demux/rtpsession.c

@@ -366,7 +366,7 @@ rtp_decode (demux_t *demux, const rtp_session_t *session, rtp_source_t *src)
     /* FIXME: handle timestamp wrap properly */
     /* TODO: sync multiple sources sanely... */
     const uint32_t timestamp = GetDWBE (block->p_buffer + 4);
-    block->i_pts = CLOCK_FREQ * timestamp / pt->frequency;
+    block->i_pts = UINT64_C(1) * CLOCK_FREQ * timestamp / pt->frequency;
 
     /* CSRC count */
     size_t skip = 12u + (block->p_buffer[0] & 0x0F) * 4;