patch 8.0.1775: MS-Windows: warning for unused variable

Problem:    MS-Windows: warning for unused variable.
Solution:   Move declaration inside #ifdef. (Mike Williams)

src/channel.c

@@ -5496,12 +5496,12 @@ job_start(typval_T *argvars, char **argv_arg, jobopt_T *opt_arg)
     int		argc = 0;
 #if defined(UNIX)
 # define USE_ARGV
+    int		i;
 #else
     garray_T	ga;
 #endif
     jobopt_T	opt;
     ch_part_T	part;
-    int		i;
 
     job = job_alloc();
     if (job == NULL)

src/version.c

@@ -761,6 +761,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1775,
 /**/
     1774,
 /**/