libwine: Test against __linux__ define instead of just linux.
diff --git a/libs/wine/ldt.c b/libs/wine/ldt.c
index 7475d51..685ed6a 100644
--- a/libs/wine/ldt.c
+++ b/libs/wine/ldt.c
@@ -35,7 +35,7 @@
 
 #ifdef __i386__
 
-#ifdef linux
+#ifdef __linux__
 
 #ifdef HAVE_SYS_SYSCALL_H
 # include <sys/syscall.h>