use strbuf_addch for adding single characters

diff --git a/merge-recursive.c b/merge-recursive.c
index b5c3c5314f8a4b30dc19b12f311383dd189ae3db..fad7b2c2b8f186fb0129dd1167677c5c2f42b326 100644 (file)
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -171,7 +171,7 @@ static void output(struct merge_options *o, int v, const char *fmt, ...)
        strbuf_vaddf(&o->obuf, fmt, ap);
        va_end(ap);
 
-       strbuf_add(&o->obuf, "\n", 1);
+       strbuf_addch(&o->obuf, '\n');
        if (!o->buffer_output)
                flush_output(o);
 }