patch 9.1.1382: if_ruby: unused compiler warnings from ruby internals

Problem:  if_ruby: unused compiler warnings from ruby internals
Solution: disable -Wunused-parameter for if_ruby internal code
          (Philip H.)

closes: #17297

Signed-off-by: Philip H. <47042125+pheiduck@users.noreply.github.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/if_ruby.c b/src/if_ruby.c
index 52f54f3..b769adf 100644
--- a/src/if_ruby.c
+++ b/src/if_ruby.c
@@ -107,7 +107,10 @@
 # undef SIZEOF_TIME_T
 #endif
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-parameter"
 #include <ruby.h>
+#pragma GCC diagnostic pop
 #include <ruby/encoding.h>
 
 // See above.