Add GC map to oat file

Change-Id: Ied0462c711a09e2542f231c3b2fa31239958bd28
diff --git a/src/compiler/CompilerIR.h b/src/compiler/CompilerIR.h
index 49c84c1..2e89ab5 100644
--- a/src/compiler/CompilerIR.h
+++ b/src/compiler/CompilerIR.h
@@ -215,7 +215,7 @@
     int totalSize;                      // header + code size
     AssemblerStatus assemblerStatus;    // Success or fix and retry
     int assemblerRetries;
-    std::vector<short> codeBuffer;
+    std::vector<uint16_t> codeBuffer;
     std::vector<uint32_t> mappingTable;
     std::vector<uint16_t> coreVmapTable;
     std::vector<uint16_t> fpVmapTable;