test: fix compilation error

binfmt_misc.c:168:23: error: ‘sprintf’ may write a terminating nul past the end of the destination [-Werror=format-overflow=]
  168 |   sprintf(path, "%s/%s", dirname, NAME[i]);
      |                       ^
Signed-off-by: Adrian Reber <areber@redhat.com>

test/zdtm/static/binfmt_misc.c

@@ -98,7 +98,7 @@ int dump_content(const char *path, char **dump)
 int main(int argc, char **argv)
 {
 	char buf[MAX_REG_STR + 1];
-	char path[PATH_MAX];
+	char path[PATH_MAX*2 + 1];
 	char *dump[2];
 	int i, fd, len;