THRIFT-302. ruby: Native extension fails to build

A piece of code needed for compilation on Linux was missing; this patch replaces it. Also, there were some compiler warnings and declarations that were missing that are now fixed.

git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@740366 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/rb/ext/binary_protocol_accelerated.h b/lib/rb/ext/binary_protocol_accelerated.h
index 4d3517b..6175ff4 100644
--- a/lib/rb/ext/binary_protocol_accelerated.h
+++ b/lib/rb/ext/binary_protocol_accelerated.h
@@ -1,2 +1 @@
-
-void Init_binary_protocol_accelerated();
\ No newline at end of file
+void Init_binary_protocol_accelerated();