[PATCH] combine-diff: suppress a clang warning

[John Keeping <john@keeping.me.uk>]

When compiling combine-diff.c, clang 3.2 says:

    combine-diff.c:1006:19: warning: adding 'int' to a string does not
	    append to the string [-Wstring-plus-int]
		prefix = COLONS + offset;
			 ~~~~~~~^~~~~~~~
    combine-diff.c:1006:19: note: use array indexing to silence this warning
		prefix = COLONS + offset;
				^
			 &      [       ]

Suppress this by making the suggested change.

Signed-off-by: John Keeping <john@keeping.me.uk>
---
On Thu, Jan 17, 2013 at 11:00:08AM +0000, John Keeping wrote:
> On Thu, Jan 17, 2013 at 11:32:39AM +0100, Antoine Pelisse wrote:
> There is one remaining warning on pu which hasn't been discussed in this
> thread as far as I can see.  I'll send a patch shortly.

... and here it is.

 combine-diff.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/combine-diff.c b/combine-diff.c
index bb1cc96..dba4748 100644
--- a/combine-diff.c
+++ b/combine-diff.c
@@ -1003,7 +1003,7 @@ static void show_raw_diff(struct combine_diff_path *p, int num_parent, struct re
 		offset = strlen(COLONS) - num_parent;
 		if (offset < 0)
 			offset = 0;
-		prefix = COLONS + offset;
+		prefix = &COLONS[offset];
 
 		/* Show the modes */
 		for (i = 0; i < num_parent; i++) {
-- 
1.8.1