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, 3 insertions, 3 deletions

diff --git a/builtin-for-each-ref.c b/builtin-for-each-ref.c
index b11ca928d6..2b218425aa 100644
--- a/builtin-for-each-ref.c
+++ b/builtin-for-each-ref.c
@@ -301,7 +301,7 @@ static const char *find_wholine(const char *who, int wholen, const char *buf, un
 	return "";
 }
 
-static char *copy_line(const char *buf)
+static const char *copy_line(const char *buf)
 {
 	const char *eol = strchr(buf, '\n');
 	char *line;
@@ -315,7 +315,7 @@ static char *copy_line(const char *buf)
 	return line;
 }
 
-static char *copy_name(const char *buf)
+static const char *copy_name(const char *buf)
 {
 	const char *eol = strchr(buf, '\n');
 	const char *eoname = strstr(buf, " <");
@@ -330,7 +330,7 @@ static char *copy_name(const char *buf)
 	return line;
 }
 
-static char *copy_email(const char *buf)
+static const char *copy_email(const char *buf)
 {
 	const char *email = strchr(buf, '<');
 	const char *eoemail = strchr(email, '>');