reverse ethash changes

libethash/io_posix.c

@@ -89,7 +89,6 @@ bool ethash_get_default_dirname(char* strbuf, size_t buffsize)
 	static const char dir_suffix[] = ".ethash/";
 	strbuf[0] = '\0';
 	char* home_dir = getenv("HOME");
-
 	size_t len = strlen(home_dir);
 	if (!ethash_strncat(strbuf, buffsize, home_dir, len)) {
 		return false;