Fix test bug.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@131328 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/chart.pass.cpp b/test/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/chart.pass.cpp
index 7a80212..b506822 100644
--- a/test/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/chart.pass.cpp
+++ b/test/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/chart.pass.cpp
@@ -80,7 +80,7 @@
         assert(!is.fail());
         assert(c == L'b');
         is >> c;
-        assert( is.eof());
+        assert(!is.eof());
         assert(!is.fail());
         assert(c == L'c');
     }