Merge branch 'rs/misc-cppcheck-fixes'

Various small fixes.

* rs/misc-cppcheck-fixes:
  server-info: avoid calling fclose(3) twice in update_info_file()
  files_for_each_reflog_ent_reverse(): close stream and free strbuf on error
  am: close stream on error, but not stdin

builtin/am.c

@@ -762,13 +762,17 @@ static int split_mail_conv(mail_conv_fn fn, struct am_state *state,
 		mail = mkpath("%s/%0*d", state->dir, state->prec, i + 1);
 
 		out = fopen(mail, "w");
-		if (!out)
+		if (!out) {
+			if (in != stdin)
+				fclose(in);
 			return error_errno(_("could not open '%s' for writing"),
 					   mail);
+		}
 
 		ret = fn(out, in, keep_cr);
 
 		fclose(out);
+		if (in != stdin)
 			fclose(in);
 
 		if (ret)

refs/files-backend.c

@@ -3294,7 +3294,7 @@ static int files_for_each_reflog_ent_reverse(struct ref_store *ref_store,
 
 	/* Jump to the end */
 	if (fseek(logfp, 0, SEEK_END) < 0)
-		return error("cannot seek back reflog for %s: %s",
+		ret = error("cannot seek back reflog for %s: %s",
 			    refname, strerror(errno));
 	pos = ftell(logfp);
 	while (!ret && 0 < pos) {
@@ -3305,13 +3305,17 @@ static int files_for_each_reflog_ent_reverse(struct ref_store *ref_store,
 
 		/* Fill next block from the end */
 		cnt = (sizeof(buf) < pos) ? sizeof(buf) : pos;
-		if (fseek(logfp, pos - cnt, SEEK_SET))
-			return error("cannot seek back reflog for %s: %s",
+		if (fseek(logfp, pos - cnt, SEEK_SET)) {
+			ret = error("cannot seek back reflog for %s: %s",
 				    refname, strerror(errno));
+			break;
+		}
 		nread = fread(buf, cnt, 1, logfp);
-		if (nread != 1)
-			return error("cannot read %d bytes from reflog for %s: %s",
+		if (nread != 1) {
+			ret = error("cannot read %d bytes from reflog for %s: %s",
 				    cnt, refname, strerror(errno));
+			break;
+		}
 		pos -= cnt;
 
 		scanp = endp = buf + cnt;

server-info.c

@@ -14,19 +14,21 @@ static int update_info_file(char *path, int (*generate)(FILE *))
 	char *tmp = mkpathdup("%s_XXXXXX", path);
 	int ret = -1;
 	int fd = -1;
-	FILE *fp = NULL;
+	FILE *fp = NULL, *to_close;
 
 	safe_create_leading_directories(path);
 	fd = git_mkstemp_mode(tmp, 0666);
 	if (fd < 0)
 		goto out;
-	fp = fdopen(fd, "w");
+	to_close = fp = fdopen(fd, "w");
 	if (!fp)
 		goto out;
+	fd = -1;
 	ret = generate(fp);
 	if (ret)
 		goto out;
-	if (fclose(fp))
+	fp = NULL;
+	if (fclose(to_close))
 		goto out;
 	if (adjust_shared_perm(tmp) < 0)
 		goto out;