WholeProgramDevirt: initialize WasDevirt in all constructors.

Summary: This is a follow up to r278389 and r278442.

Differential Revision: https://reviews.llvm.org/D23438

llvm-svn: 278455
diff --git a/llvm/lib/Transforms/IPO/WholeProgramDevirt.cpp b/llvm/lib/Transforms/IPO/WholeProgramDevirt.cpp
index e78665f..69c5226 100644
--- a/llvm/lib/Transforms/IPO/WholeProgramDevirt.cpp
+++ b/llvm/lib/Transforms/IPO/WholeProgramDevirt.cpp
@@ -185,7 +185,7 @@
 
 VirtualCallTarget::VirtualCallTarget(Function *Fn, const TypeMemberInfo *TM)
     : Fn(Fn), TM(TM),
-      IsBigEndian(Fn->getParent()->getDataLayout().isBigEndian()) {}
+      IsBigEndian(Fn->getParent()->getDataLayout().isBigEndian()), WasDevirt(false) {}
 
 namespace {