Upstream-Status: Backport

This fixes compilation issues when using flex-2.5.37. It was taken from upstream.

Original author is: Vladimir Serbinenko  <phcoder@gmail.com>

Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com>

Index: grub-2.00/grub-core/script/yylex.l
===================================================================
--- grub-2.00.orig/grub-core/script/yylex.l	2012-06-08 23:24:15.000000000 +0300
+++ grub-2.00/grub-core/script/yylex.l	2013-07-31 14:34:40.708100982 +0300
@@ -29,6 +29,8 @@
 #pragma GCC diagnostic ignored "-Wmissing-prototypes"
 #pragma GCC diagnostic ignored "-Wmissing-declarations"
 #pragma GCC diagnostic ignored "-Wunsafe-loop-optimizations"
+#pragma GCC diagnostic ignored "-Wunused-function"
+#pragma GCC diagnostic ignored "-Wsign-compare"
 
 #define yyfree    grub_lexer_yyfree
 #define yyalloc   grub_lexer_yyalloc