Make code buffer units 8bit rather than 16bit.

Change-Id: I1ca087c4f7f820a8816388095405603f4163b354
diff --git a/src/compiler/CompilerIR.h b/src/compiler/CompilerIR.h
index 58eba7c..4f071b1 100644
--- a/src/compiler/CompilerIR.h
+++ b/src/compiler/CompilerIR.h
@@ -293,7 +293,7 @@
     int totalSize;                      // header + code size
     AssemblerStatus assemblerStatus;    // Success or fix and retry
     int assemblerRetries;
-    std::vector<uint16_t> codeBuffer;
+    std::vector<uint8_t> codeBuffer;
     std::vector<uint32_t> mappingTable;
     std::vector<uint16_t> coreVmapTable;
     std::vector<uint16_t> fpVmapTable;