Description: Revert wrong upstream commit that causes a build failure.
 Reverts upstream commit fb964cdcd8fddd7722826379c28bcbece7b1d8fd, which
 wrongly claims to be fixing C++ compilation.  There's a better fix for that,
 stop using a C++ compiler to build your C program!
Author: Steve Langasek <vorlon@debian.org>
Last-Update: 2018-06-30

Index: freetype-2.9.1/ft2demos/src/ftgrid.c
===================================================================
--- freetype-2.9.1.orig/ft2demos/src/ftgrid.c
+++ freetyep-2.9.1/ft2demos/src/ftgrid.c
@@ -51,10 +51,10 @@
   struct  AF_GlyphHintsRec_;
   typedef struct AF_GlyphHintsRec_*  AF_GlyphHints;
 
-  extern int            _af_debug_disable_horz_hints;
-  extern int            _af_debug_disable_vert_hints;
-  extern int            _af_debug_disable_blue_hints;
-  extern AF_GlyphHints  _af_debug_hints;
+  int            _af_debug_disable_horz_hints;
+  int            _af_debug_disable_vert_hints;
+  int            _af_debug_disable_blue_hints;
+  AF_GlyphHints  _af_debug_hints;
 
 #ifdef __cplusplus
   extern "C" {