patch 9.1.1686: if_ruby: unknown pragma when not using gcc

Problem:  if_ruby: unknown pragma when not using gcc
Solution: only use GCC pragma, when using GCC
          (Cthulhux)

fixes: #18109
closes: #18110

Signed-off-by: Cthulhux <github@tuxproject.de>
Signed-off-by: Christian Brabandt <cb@256bit.org>

src/if_ruby.c

@@ -107,10 +107,14 @@
 # undef SIZEOF_TIME_T
 #endif
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunused-parameter"
+#ifdef __GNUC__
+# pragma GCC diagnostic push
+# pragma GCC diagnostic ignored "-Wunused-parameter"
+#endif
 #include <ruby.h>
-#pragma GCC diagnostic pop
+#ifdef __GNUC__
+# pragma GCC diagnostic pop
+#endif
 #include <ruby/encoding.h>
 
 // See above.

src/version.c

@@ -724,6 +724,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1686,
 /**/
     1685,
 /**/