Revert one typo

git-svn-id: svn+ssh://svn.code.sf.net/p/mingw-w64/code/trunk@282 4407c894-4637-0410-b4f5-ada5f102cad1

mingw-w64-headers/include/excpt.h

diff --git a/mingw-w64-headers/include/excpt.h b/mingw-w64-headers/include/excpt.h
index 8fc4c4c..ca2d008 100644
--- a/mingw-w64-headers/include/excpt.h
+++ b/mingw-w64-headers/include/excpt.h
@@ -99,7 +99,7 @@
   : : : "%eax");
 #elif defined(__x86_64)
 #define __try1(pHandler) \
-  __asm__ ("pushq %0;pushq %%fs:0;movq %%rsp,%%fs:0;" : : "g" (pHandler));
+  __asm__ ("pushq %0;pushq %%gs:0;movq %%rsp,%%fs:0;" : : "g" (pHandler));
 
 #define	__except1	\
   __asm__ ("movq (%%rsp),%%rax;movq %%rax,%%fs:0;addq $16,%%rsp;" \