Upstream-Status: Backport http://trac.webkit.org/changeset/160834

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

Index: a/Source/WTF/wtf/dtoa/double-conversion.cc
===================================================================
--- a/Source/WTF/wtf/dtoa/double-conversion.cc	(revision 160833)
+++ b/Source/WTF/wtf/dtoa/double-conversion.cc	(revision 160834)
@@ -447,5 +447,5 @@
         const int kBufferSize = kMaxSignificantDigits + 10;
         char buffer[kBufferSize];  // NOLINT: size is known at compile time.
-        int buffer_pos = 0;
+        unsigned buffer_pos = 0;
         
         // Exponent will be adjusted if insignificant digits of the integer part
