10144 BZ2_bzDecompressReset() gets NULL check wrong

@@ -671,16 +671,17 @@
 /*
  * added to allow reuse of bz_stream without malloc/free
  */
 int BZ_API(BZ2_bzDecompressReset) ( bz_stream* strm )
 {
-   DState* s = strm->state;
+   DState* s;
 
    if (!bz_config_ok()) return BZ_CONFIG_ERROR;
 
    if (strm == NULL) return BZ_PARAM_ERROR;
 
+   s = strm->state;
    s->strm                  = strm;
 
    s->state                 = BZ_X_MAGIC_1;
    s->bsLive                = 0;
    s->bsBuff                = 0;