From eee1fd6e2cbc37f0c416ce7a6e73b9165a1198ea Mon Sep 17 00:00:00 2001
From: hendricks266 <hendricks266@1a8010ca-5511-0410-912e-c29ae57300e0>
Date: Thu, 22 Mar 2018 04:48:54 +0000
Subject: [PATCH] MIDI/Windows: Return early from MPU_Init if MPU_Reset was not
 previously called to shut the MPU down.

git-svn-id: https://svn.eduke32.com/eduke32@6782 1a8010ca-5511-0410-912e-c29ae57300e0
---
 source/duke3d/src/mpu401.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/source/duke3d/src/mpu401.cpp b/source/duke3d/src/mpu401.cpp
index 8ffd2f620..0b0af6eb0 100644
--- a/source/duke3d/src/mpu401.cpp
+++ b/source/duke3d/src/mpu401.cpp
@@ -257,6 +257,7 @@ int32_t MPU_Reset
 {
     midiStreamStop(hmido);
     midiStreamClose(hmido);
+    hmido = (HMIDISTRM)-1;
 
     return MPU_Ok;
 }
@@ -274,6 +275,9 @@ int32_t MPU_Init
 )
 
 {
+    if (hmido != (HMIDISTRM)-1)
+        return MPU_Ok;
+
     int32_t i;
 
     for (i=0; i<NUMBUFFERS; i++) eventcnt[i]=0;