Fix force stereo

truly a mom moment

Author: yretenai

DataTool/ConvertLogic/WEM/WwiseRIFFOpus.cs

@@ -156,12 +156,6 @@ public WwiseRIFFOpus(Stream stream, bool forceStereo) {
                     _ => 0,
                 };
 
-                if (DEBUGForceStereo && Header.Channels > 2) {
-                    Header.CoupledCount = 1;
-                    Header.Channels = 2;
-                    MappingFamily = 1;
-                }
-
                 Header.StreamCount = Header.Channels - Header.CoupledCount;
 
                 Header.ChannelMapping = new byte[Header.Channels];
@@ -170,7 +164,13 @@ public WwiseRIFFOpus(Stream stream, bool forceStereo) {
                         Header.ChannelMapping[i] = MappingMatrix[Header.Channels - 1][i];
                     }
                 } else {
-                    if ((Header.ChannelLayout & 8) == 0) {
+                    if (DEBUGForceStereo && Header.Channels > 2) {
+                        Header.StreamCount = Header.Channels;
+                        Header.Channels = 2;
+                        MappingFamily = 1;
+                    }
+
+                    if (MappingFamily is 0 or 1 || (Header.ChannelLayout & 8) == 0) {
                         for (var i = 0; i < Header.Channels; i++) {
                             Header.ChannelMapping[i] = (byte) i;
                         }