Revert "[wpa_supplicant] Cumulative patch from b8491ae5a"

This reverts commit 878cf7bcbf2d7d8f08c3d060b8c5fbfcf0743eda.

Reason for revert: git_master/sdk_phone_armv7-sdk

Change-Id: I6070fc5c1f9c20867f6dfce90e529e35578d572e
diff --git a/src/crypto/tls_wolfssl.c b/src/crypto/tls_wolfssl.c
index 83704ff..e9cb425 100644
--- a/src/crypto/tls_wolfssl.c
+++ b/src/crypto/tls_wolfssl.c
@@ -2044,7 +2044,7 @@
 				       _out, skip + out_len);
 	}
 
-	forced_memzero(master_key, master_key_len);
+	os_memset(master_key, 0, master_key_len);
 	if (ret == 0)
 		os_memcpy(out, _out + skip, out_len);
 	bin_clear_free(tmp_out, skip + out_len);