Fix type errors and a few warnings for Visual Studio 2010 64-bit build.
We're still far from 64b statically safe, mostly around SkReader32.h
and the address-alignment code in GrTypes.h.
Original code provided by jianliang79.

http://code.google.com/p/skia/issues/detail?id=601



git-svn-id: http://skia.googlecode.com/svn/trunk@3994 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/samplecode/SampleText.cpp b/samplecode/SampleText.cpp
index eced08a..db4dbea 100644
--- a/samplecode/SampleText.cpp
+++ b/samplecode/SampleText.cpp
@@ -105,7 +105,7 @@
                 SkASSERT(m > mm);
             }
         }
-        nn = SkIntToScalar(n);
+        nn = SkIntToScalar((unsigned int)n);
         mm = m;
     }