General const correctness fixes

We shouldn't attempt to assign constant strings into char*, as the
string is not writable at runtime.  Likewise we should always be
treating unsigned values as unsigned values, not as signed values.

Most of these are very straightforward.  The only exception is the
(unnecessary) xstrdup/free in builtin-branch.c for the detached
head case.  Since this is a user-level interactive type program
and that particular code path is executed no more than once, I feel
that the extra xstrdup call is well worth the easy elimination of
this warning.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/builtin-show-branch.c b/builtin-show-branch.c
index 67ae6bacda..c892f1f7a6 100644
--- a/builtin-show-branch.c
+++ b/builtin-show-branch.c
@@ -721,7 +721,8 @@ int cmd_show_branch(int ac, const char **av, const char *prefix)
 		}
 
 		for (i = 0; i < reflog; i++) {
-			char *logmsg, *msg, *m;
+			char *logmsg, *m;
+			const char *msg;
 			unsigned long timestamp;
 			int tz;