Remove a ton of implicit narrowing conversions for C++11 compatibility.

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@151071 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Plugins/Process/Utility/UnwindMacOSXFrameBackchain.cpp b/source/Plugins/Process/Utility/UnwindMacOSXFrameBackchain.cpp
index f1cb915..8cca120 100644
--- a/source/Plugins/Process/Utility/UnwindMacOSXFrameBackchain.cpp
+++ b/source/Plugins/Process/Utility/UnwindMacOSXFrameBackchain.cpp
@@ -106,7 +106,7 @@
     cursor.pc = reg_ctx->GetPC (LLDB_INVALID_ADDRESS);
     cursor.fp = reg_ctx->GetFP (0);
     
-    Frame_i386 frame = { cursor.fp, cursor.pc };
+    Frame_i386 frame = { static_cast<uint32_t>(cursor.fp), static_cast<uint32_t>(cursor.pc) };
 
     m_cursors.push_back(cursor);