patch 7.4.1321

Problem:    Compiler complains about missing statement.
Solution:   Add an empty statement. (Andrei Olsen)

src/os_win32.c

@@ -5102,6 +5102,8 @@ mch_start_job(char *cmd, job_T *job)
 failed:
 # ifdef FEAT_CHANNEL
     channel_free(channel);
+# else
+    ;  /* make compiler happy */
 # endif
 }
 

src/version.c

@@ -747,6 +747,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1321,
 /**/
     1320,
 /**/