Fix audio preprocessing library wrapper

Fixed bug in EFFECT_CMD_GET_CONFIG command handler in
webRTC audio processing library wrapper.

Change-Id: I1d2cefa00930e549607af8dc2cf27555da8d313f
diff --git a/media/libeffects/preprocessing/PreProcessing.cpp b/media/libeffects/preprocessing/PreProcessing.cpp
index 9fd6764..f57179d 100755
--- a/media/libeffects/preprocessing/PreProcessing.cpp
+++ b/media/libeffects/preprocessing/PreProcessing.cpp
@@ -1298,7 +1298,7 @@
                 return -EINVAL;
             }
 
-            Session_GetConfig(effect->session, (effect_config_t *)pCmdData);
+            Session_GetConfig(effect->session, (effect_config_t *)pReplyData);
             break;
 
         case EFFECT_CMD_SET_CONFIG_REVERSE: