Change inlined stack frame iterator to use code and pc instead of frame.

runtime/lib/stacktrace.cc

Index: runtime/lib/stacktrace.cc
===================================================================
--- runtime/lib/stacktrace.cc	(revision 27137)
+++ runtime/lib/stacktrace.cc	(working copy)
@@ -55,7 +55,8 @@
       if (code.is_optimized()) {
         // For optimized frames, extract all the inlined functions if any
         // into the stack trace.
-        for (InlinedFunctionsIterator it(frame); !it.Done(); it.Advance()) {
+        for (InlinedFunctionsIterator it(code, frame->pc());
+              !it.Done(); it.Advance()) {
           func = it.function();
           code = it.code();
           uword pc = it.pc();