Fix some plugins that use NULL instead of -1 when not using a voice id in struct opt_items. Change as many '#define NULL 0' to '#define NULL ((void*)0)' as grep would find - somewehere the former is still hiding it seems. :\

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15117 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 1 insertions, 1 deletions

diff --git a/firmware/include/string.h b/firmware/include/string.h
index 713a875698..32b86cd2b0 100644
--- a/firmware/include/string.h
+++ b/firmware/include/string.h
@@ -17,7 +17,7 @@ extern "C" {
 #include <stddef.h>
 
 #ifndef NULL
-#define NULL 0
+#define NULL ((void*)0)
 #endif
 
 _PTR     _EXFUN(memchr,(const _PTR, int, size_t));