Subzero: Use the CfgLocalAllocator for more vector types.

BUG= none
R=jvoung@chromium.org

Review URL: https://codereview.chromium.org/812023003
diff --git a/src/IceDefs.h b/src/IceDefs.h
index 867a2dd..8aafbfd 100644
--- a/src/IceDefs.h
+++ b/src/IceDefs.h
@@ -106,7 +106,8 @@
 // Inst::Number value, giving the instruction number that begins or
 // ends a variable's live range.
 typedef std::pair<SizeT, InstNumberT> LiveBeginEndMapEntry;
-typedef std::vector<LiveBeginEndMapEntry> LiveBeginEndMap;
+typedef std::vector<LiveBeginEndMapEntry,
+                    CfgLocalAllocator<LiveBeginEndMapEntry> > LiveBeginEndMap;
 typedef llvm::BitVector LivenessBV;
 
 typedef uint32_t TimerStackIdT;