Add include guard.

git-svn-id: http://root.cern.ch/svn/root/trunk@41596 27541ba8-7e3a-0410-8455-c3a389f83636

cint/cint/inc/G__ci_fproto.h

@@ -12,6 +12,8 @@
  * For the licensing terms see the file COPYING
  *
  ************************************************************************/
+#ifndef G__CI_FPROTO_INCLUDE
+#define G__CI_FPROTO_INCLUDE
 
 G__DECL_API(0, unsigned long, G__uint, (G__value buf))
 G__DECL_API(1, int, G__fgetline, (char *string))
@@ -407,3 +409,5 @@ G__DECL_API(268, struct G__ifunc_table_internal*, G__get_ifunc_internal, (struct
 
 #define G__NUMBER_OF_API_FUNCTIONS 270
 G__DUMMYTOCHECKFORDUPLICATES(G__NUMBER_OF_API_FUNCTIONS)
+
+#endif /* G__CI_FPROTO_INCLUDE */