Fix that uninstaller isn't found on 64-bit Windows.
diff --git a/src/dosinst.h b/src/dosinst.h
index 86e65e9..b33426a 100644
--- a/src/dosinst.h
+++ b/src/dosinst.h
@@ -83,6 +83,14 @@
# define TRUE 1
#endif
+/*
+ * Modern way of creating registry entries, also works on 64 bit windows when
+ * compiled as a 32 bit program.
+ */
+# ifndef KEY_WOW64_64KEY
+# define KEY_WOW64_64KEY 0x0100
+# endif
+
#define VIM_STARTMENU "Programs\\Vim " VIM_VERSION_SHORT
int interactive; /* non-zero when running interactively */