Unsigned Integer Overflow in transportDec_AdjustEndOfAccessUnit().

Bug: 112661348
Test: atest DecoderTestXheAac ; atest DecoderTestAacDrc
Change-Id: Ie4924460d30ea4ef76917704ded809d04db78993
diff --git a/libMpegTPDec/src/tpdec_lib.cpp b/libMpegTPDec/src/tpdec_lib.cpp
index 1d8b7b3..cee0768 100644
--- a/libMpegTPDec/src/tpdec_lib.cpp
+++ b/libMpegTPDec/src/tpdec_lib.cpp
@@ -736,9 +736,9 @@
             hTp->parser.latm.m_audioMuxLengthBytes > 0) {
           int loasOffset;
 
-          loasOffset = (hTp->parser.latm.m_audioMuxLengthBytes * 8 +
-                        FDKgetValidBits(hBs)) -
-                       hTp->globalFramePos;
+          loasOffset = ((INT)hTp->parser.latm.m_audioMuxLengthBytes * 8 +
+                        (INT)FDKgetValidBits(hBs)) -
+                       (INT)hTp->globalFramePos;
           if (loasOffset != 0) {
             FDKpushBiDirectional(hBs, loasOffset);
             /* For ELD and other payloads there is an unknown amount of padding,