Avoid left-shifting negative values in a number of places

webrtc/common_audio/signal_processing/vector_scaling_operations.c

Index: webrtc/common_audio/signal_processing/vector_scaling_operations.c
diff --git a/webrtc/common_audio/signal_processing/vector_scaling_operations.c b/webrtc/common_audio/signal_processing/vector_scaling_operations.c
index fdefd0676079ad0ec409aa589ea459bb7afdc85e..e1f391d10a49ab66c1f90bbfba049a1fc3e8fe06 100644
--- a/webrtc/common_audio/signal_processing/vector_scaling_operations.c
+++ b/webrtc/common_audio/signal_processing/vector_scaling_operations.c
@@ -37,7 +37,7 @@ void WebRtcSpl_VectorBitShiftW16(int16_t *res, size_t length,
     {
         for (i = length; i > 0; i--)
         {
-            (*res++) = ((*in++) << (-right_shifts));
+            (*res++) = ((*in++) * (1 << (-right_shifts)));
         }
     }
 }