patch 8.0.1613: warning for unused variable in tiny build

Problem:    Warning for unused variable in tiny build. (Tony Mechelynck)
Solution:   Move declaration to inner block.

Author: brammool

src/os_unix.c

@@ -4588,7 +4588,6 @@ mch_call_shell_fork(
     char_u	*tofree1 = NULL;
     char_u	*tofree2 = NULL;
     int		i;
-    char_u	*p;
     int		pty_master_fd = -1;	    /* for pty's */
 # ifdef FEAT_GUI
     int		pty_slave_fd = -1;
@@ -5174,6 +5173,7 @@ mch_call_shell_fork(
 			else if (has_mbyte)
 			{
 			    int		l;
+			    char_u	*p;
 
 			    len += buffer_off;
 			    buffer[len] = NUL;

src/version.c

@@ -766,6 +766,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1613,
 /**/
     1612,
 /**/