commit: move layout into page function

This allows us to return a proper HTTP status code when an object is not
found by switching from cgit_print_error() to cgit_print_error_page().

Signed-off-by: John Keeping <john@keeping.me.uk>

cmd.c

@@ -157,7 +157,7 @@ struct cgit_cmd *cgit_get_cmd(void)
 		def_cmd(atom, 1, 0, 0, 0),
 		def_cmp(about, 0, 0, 0, 0),
 		def_cmd(blob, 1, 0, 0, 0),
-		def_cmd(commit, 1, 1, 1, 0),
+		def_cmd(commit, 1, 0, 1, 0),
 		def_cmd(diff, 1, 1, 1, 0),
 		def_cmd(info, 1, 0, 0, 1),
 		def_cmd(log, 1, 1, 1, 0),

ui-commit.c

@@ -27,12 +27,14 @@ void cgit_print_commit(char *hex, const char *prefix)
 		hex = ctx.qry.head;
 
 	if (get_sha1(hex, sha1)) {
-		cgit_print_error("Bad object id: %s", hex);
+		cgit_print_error_page(400, "Bad request",
+				"Bad object id: %s", hex);
 		return;
 	}
 	commit = lookup_commit_reference(sha1);
 	if (!commit) {
-		cgit_print_error("Bad commit reference: %s", hex);
+		cgit_print_error_page(404, "Not found",
+				"Bad commit reference: %s", hex);
 		return;
 	}
 	info = cgit_parse_commit(commit);
@@ -41,6 +43,7 @@ void cgit_print_commit(char *hex, const char *prefix)
 
 	load_ref_decorations(DECORATE_FULL_REFS);
 
+	cgit_print_layout_start();
 	cgit_print_diff_ctrls();
 	html("<table summary='commit info' class='commit-info'>\n");
 	html("<tr><th>author</th><td>");
@@ -139,4 +142,5 @@ void cgit_print_commit(char *hex, const char *prefix)
 	}
 	strbuf_release(&notes);
 	cgit_free_commitinfo(info);
+	cgit_print_layout_end();
 }