updated for version 7.4.216

Problem:    Compiler warnings. (Tony Mechelynck)
Solution:   Initialize variables, add #ifdef.

src/os_unix.h

@@ -565,7 +565,9 @@ int mch_rename __ARGS((const char *src, const char *dest));
 # endif
 #endif
 
+#ifndef HAVE_DUP
 # define HAVE_DUP		/* have dup() */
+#endif
 #define HAVE_ST_MODE		/* have stat.st_mode */
 
 /* We have three kinds of ACL support. */

src/term.c

@@ -4185,7 +4185,7 @@ check_termcode(max_offset, buf, bufsize, buflen)
 	    {
 #ifdef FEAT_MBYTE
 		int col;
-		int row_char;
+		int row_char = NUL;
 #endif
 		j = 0;
 		extra = 0;

src/version.c

@@ -734,6 +734,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    216,
 /**/
     215,
 /**/