remove C++ guards on hashkey.h

These are no longer necessary now that this header contains no function
prototypes.

diff --git a/lib/ast/hashkey.h b/lib/ast/hashkey.h
index 14cedfc935fbc15b9e7ca33d1c03b9e7ede7355d..08935326622b5396046b0a464cfb4c30632935e7 100644 (file)
--- a/lib/ast/hashkey.h
+++ b/lib/ast/hashkey.h
@@ -10,10 +10,6 @@
 
 #pragma once
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 /*
  * Glenn Fowler
  * AT&T Research
@@ -43,7 +39,3 @@ extern "C" {
 #define HASHNKEY5(n,c5,c4,c3,c2,c1)    HASHKEY6((n)+'a',c5,c4,c3,c2,c1)
 
 #undef extern
-
-#ifdef __cplusplus
-}
-#endif