[vm] Fix MSVC build.

TEST=ci
Change-Id: I13a1485b792e8115e6fbae1064cc60c81959dc7d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/495780
Reviewed-by: Alexander Aprelev <aam@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>

runtime/vm/profiler.cc

@@ -1058,8 +1058,7 @@ class ProfilerDartStackWalker : public ProfilerStackWalker {
                                    is_interpreted_frame) ||
         StubCode::InInvocationStub(thread_, Stack(sp, 1), is_interpreted_frame);
 #else
-        StubCode::InInvocationStub(thread_, reinterpret_cast<uword>(lr),
-                                   is_interpreted_frame);
+        StubCode::InInvocationStub(thread_, lr, is_interpreted_frame);
 #endif
     if (is_entry_frame) {
       // During the prologue of a function, CallerPC will return the caller's