cov: fix memory leak

Reapply 23cc7ddc50e2800a6dc248de897a4c88c1514160 to internal version
of libdm.

diff --git a/device_mapper/libdm-common.c b/device_mapper/libdm-common.c
index 1cb29f1e895e6d3cdf33dfb375fe1bcfd7aa9dc5..bc691d62977026d9854686794928f2a63214383f 100644 (file)
--- a/device_mapper/libdm-common.c
+++ b/device_mapper/libdm-common.c
@@ -2012,7 +2012,8 @@ static int _sysfs_get_kernel_name(uint32_t major, uint32_t minor, char *buf, siz
                        log_sys_error("readlink", sysfs_path);
                else {
                        log_sys_debug("readlink", sysfs_path);
-                       return _sysfs_find_kernel_name(major, minor, buf, buf_size);
+                       r = _sysfs_find_kernel_name(major, minor, buf, buf_size);
+                       goto out;
                }
                goto bad;
        }
@@ -2033,6 +2034,7 @@ static int _sysfs_get_kernel_name(uint32_t major, uint32_t minor, char *buf, siz
        strcpy(buf, name);
        r = 1;
 bad:
+out:
        free(temp_buf);
        free(sysfs_path);