git-merge: show usage if run without arguments

diff --git a/builtin-fmt-merge-msg.c b/builtin-fmt-merge-msg.c
index 432963db9006c404d4b79c7e9b5c8d539e783605..c407c033e7d4f43818d62691688911de71a5cf11 100644 (file)
--- a/builtin-fmt-merge-msg.c
+++ b/builtin-fmt-merge-msg.c
@@ -111,29 +111,29 @@ static int handle_line(char *line)
        i = find_in_list(&srcs, src);
        if (i < 0) {
                i = srcs.nr;
-               append_to_list(&srcs, strdup(src),
+               append_to_list(&srcs, xstrdup(src),
                                xcalloc(1, sizeof(struct src_data)));
        }
        src_data = srcs.payload[i];
 
        if (pulling_head) {
-               origin = strdup(src);
+               origin = xstrdup(src);
                src_data->head_status |= 1;
        } else if (!strncmp(line, "branch ", 7)) {
-               origin = strdup(line + 7);
+               origin = xstrdup(line + 7);
                append_to_list(&src_data->branch, origin, NULL);
                src_data->head_status |= 2;
        } else if (!strncmp(line, "tag ", 4)) {
                origin = line;
-               append_to_list(&src_data->tag, strdup(origin + 4), NULL);
+               append_to_list(&src_data->tag, xstrdup(origin + 4), NULL);
                src_data->head_status |= 2;
        } else if (!strncmp(line, "remote branch ", 14)) {
-               origin = strdup(line + 14);
+               origin = xstrdup(line + 14);
                append_to_list(&src_data->r_branch, origin, NULL);
                src_data->head_status |= 2;
        } else {
-               origin = strdup(src);
-               append_to_list(&src_data->generic, strdup(line), NULL);
+               origin = xstrdup(src);
+               append_to_list(&src_data->generic, xstrdup(line), NULL);
                src_data->head_status |= 2;
        }
 
@@ -145,7 +145,7 @@ static int handle_line(char *line)
                        new_origin[len - 2] = 0;
                        origin = new_origin;
                } else
-                       origin = strdup(origin);
+                       origin = xstrdup(origin);
        } else {
                char *new_origin = xmalloc(strlen(origin) + strlen(src) + 5);
                sprintf(new_origin, "%s of %s", origin, src);
@@ -203,7 +203,7 @@ static void shortlog(const char *name, unsigned char *sha1,
 
                bol = strstr(commit->buffer, "\n\n");
                if (!bol) {
-                       append_to_list(&subjects, strdup(sha1_to_hex(
+                       append_to_list(&subjects, xstrdup(sha1_to_hex(
                                                        commit->object.sha1)),
                                        NULL);
                        continue;
@@ -218,7 +218,7 @@ static void shortlog(const char *name, unsigned char *sha1,
                        memcpy(oneline, bol, len);
                        oneline[len] = 0;
                } else
-                       oneline = strdup(bol);
+                       oneline = xstrdup(bol);
                append_to_list(&subjects, oneline, NULL);
        }
 
@@ -277,7 +277,7 @@ int cmd_fmt_merge_msg(int argc, const char **argv, const char *prefix)
                usage(fmt_merge_msg_usage);
 
        /* get current branch */
-       head = strdup(git_path("HEAD"));
+       head = xstrdup(git_path("HEAD"));
        current_branch = resolve_ref(head, head_sha1, 1);
        current_branch += strlen(head) - 4;
        free((char *)head);