[PATCH x11proto] Fix typo __has_extenstion -> __has_extension

[Keith Packard]

Signed-off-by: Keith Packard <keithp at keithp.com>
---
 Xfuncproto.h.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Xfuncproto.h.in b/Xfuncproto.h.in
index 8715c9d..b88493d 100644
--- a/Xfuncproto.h.in
+++ b/Xfuncproto.h.in
@@ -83,7 +83,7 @@ in this Software without prior written authorization from The Open Group.
 # define __has_feature(x) 0    /* Compatibility with non-clang compilers. */
 #endif
 #ifndef __has_extension
-# define __has_extenstion(x) 0 /* Compatibility with non-clang compilers. */
+# define __has_extension(x) 0  /* Compatibility with non-clang compilers. */
 #endif
 
 /* Added in X11R6.9, so available in any version of modular xproto */
-- 
2.9.3