STORM-830 Volume slider isn't properly remembered if set to zero

There is an edge case in setMasterGain during startup which prevents setInternalGain from being called if the master volume setting and mInternalGain both equal 0.
In llaudioengine.cpp setting mInternalGain to a very low but non-zero value fixes this issue.

1 files changed, 4 insertions, 1 deletions

diff --git a/indra/llaudio/llaudioengine.cpp b/indra/llaudio/llaudioengine.cpp
index c9cb1cd6e7..8baba79f59 100644
--- a/indra/llaudio/llaudioengine.cpp
+++ b/indra/llaudio/llaudioengine.cpp
@@ -97,7 +97,10 @@ void LLAudioEngine::setDefaults()
 	}
 
 	mMasterGain = 1.f;
-	mInternalGain = 0.f;
+	// Setting mInternalGain to a very low but non-zero value fixes the issue reported in STORM-830.
+	// There is an edge case in setMasterGain during startup which prevents setInternalGain from 
+	// being called if the master volume setting and mInternalGain both equal 0.
+	mInternalGain = 0.0000000001f;
 	mNextWindUpdate = 0.f;
 
 	mStreamingAudioImpl = NULL;