Get a variable where it's needed

Alc/mixer.c

@@ -634,9 +634,6 @@ ALvoid MixSource(ALsource *Source, ALCdevice *Device, ALuint SamplesToDo)
     DataPosFrac   = Source->position_fraction;
     Looping       = Source->bLooping;
 
-    /* Get fixed point step */
-    increment = Source->Params.Step;
-
     /* Get current buffer queue item */
     BufferListItem = Source->queue;
     for(i = 0;i < BuffersPlayed;i++)
@@ -710,6 +707,7 @@ ALvoid MixSource(ALsource *Source, ALCdevice *Device, ALuint SamplesToDo)
             memset(&Data.p8[DataSize*Channels*Bytes], 0, (BUFFER_PADDING*Channels*Bytes));
 
         /* Figure out how many samples we can mix. */
+        increment = Source->Params.Step;
         DataSize64 = LoopEnd;
         DataSize64 <<= FRACTIONBITS;
         DataPos64 = DataPosInt;