[PATCH 2/8] Fix warning about incompatible pointer types

If ast_channel struct is not declared before ast_register_application2,
gcc thinks that the implicit declaration in module.h is different from
the one in channel.h, and issues a warning about incompatible pointer
types. A forward declaration before including module.h fixes this.

Due to some brain-deadness in Ast, including channel.h before module.h
causes the compilation fail altogether.
---
 chan_lcr.c |    7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/chan_lcr.c b/chan_lcr.c
index 2903243..a81e48d 100644
--- a/chan_lcr.c
+++ b/chan_lcr.c
@@ -136,6 +136,13 @@ it is called from ast_channel process which has already locked ast_channel.
 #ifdef LCR_FOR_ASTERISK
 #include <asterisk/buildopts.h>
 #endif
+
+/*
+ * Fwd declare struct ast_channel to get rid of gcc warning about
+ * incompatible pointer type passed to ast_register_application2.
+ */
+struct ast_channel;
+
 #include <asterisk/module.h>
 #include <asterisk/channel.h>
 #include <asterisk/config.h>
-- 
1.7.10.2