Fix only first argument decoded on MIPS uClibc
diff --git a/memstream.c b/memstream.c
index ac3f31a..19875e9 100644
--- a/memstream.c
+++ b/memstream.c
@@ -36,8 +36,8 @@
 					   &memstream->size);
 #else
 	memstream->stream = tmpfile();
-#endif
 	memstream->buf = NULL;
+#endif
 	return memstream->stream != NULL ? 0 : -1;
 }