Bug 301030, WWW-Authenticate: Negotiate crashes on Mac. Fix Mac-only function pointer. r=cneberg sr=darin a=bsmedberg

extensions/auth/nsAuthModuleGSSAPI.cpp

@@ -165,7 +165,7 @@ static PRBool    gssFunInit = PR_FALSE;
 #define gss_release_name_ptr        ((gss_release_name_type)*gssFunPtr[7])
 
 #ifdef XP_MACOSX
-PRFuncPtr *KLCacheHasValidTicketsPtr;
+static PRFuncPtr KLCacheHasValidTicketsPtr;
 #define KLCacheHasValidTickets_ptr \
         ((KLCacheHasValidTickets_type)*KLCacheHasValidTicketsPtr)
 #endif