[PATCH 2/7] Add cast to exception_none

[Pedro Alves <palves@redhat.com>]

Fixes, in C++ mode:

 ../../src/gdb/common/common-exceptions.c:23:69: error: invalid conversion from ‘int’ to ‘return_reason’ [-fpermissive]
  const struct gdb_exception exception_none = { 0, GDB_NO_ERROR, NULL };
								      ^

(I considered adding an enum value for '0', but the code and comments
around return_reason and its uses explain how 0 is special/internal,
so I'm leaving it be.)

gdb/ChangeLog:
2015-10-27  Pedro Alves  <palves@redhat.com>

	* common/common-exceptions.c (exception_none): Add cast.
---
 gdb/common/common-exceptions.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gdb/common/common-exceptions.c b/gdb/common/common-exceptions.c
index 8ee96ab..ce476a2 100644
--- a/gdb/common/common-exceptions.c
+++ b/gdb/common/common-exceptions.c
@@ -20,7 +20,7 @@
 #include "common-defs.h"
 #include "common-exceptions.h"
 
-const struct gdb_exception exception_none = { 0, GDB_NO_ERROR, NULL };
+const struct gdb_exception exception_none = { (enum return_reason) 0, GDB_NO_ERROR, NULL };
 
 #ifndef __cplusplus
 
-- 
1.9.3