Ensure at least the specified ringbuffer size is writable

Previously, all but one of the specified size could be written (so for a size
of n, only n-1 was guaranteed writable). All users pretty much compensated for
this, but it makes more sense to fix it at the source.

1 files changed, 1 insertions, 1 deletions

diff --git a/Alc/backends/winmm.c b/Alc/backends/winmm.c
index 787ba8e4..2f4c65df 100644
--- a/Alc/backends/winmm.c
+++ b/Alc/backends/winmm.c
@@ -626,7 +626,7 @@ static ALCenum ALCwinmmCapture_open(ALCwinmmCapture *self, const ALCchar *name)
     if(CapturedDataSize < (self->Format.nSamplesPerSec / 10))
         CapturedDataSize = self->Format.nSamplesPerSec / 10;
 
-    self->Ring = ll_ringbuffer_create(CapturedDataSize+1, self->Format.nBlockAlign, false);
+    self->Ring = ll_ringbuffer_create(CapturedDataSize, self->Format.nBlockAlign, false);
     if(!self->Ring) goto failure;
 
     InitRef(&self->WaveBuffersCommitted, 0);