Explicit cast

Author: d-frey

src/test/json/big_list_of_naughty_strings.cpp

@@ -17,7 +17,7 @@ std::string get_file_contents( const char* filename )
    if( in ) {
       std::string contents;
       in.seekg( 0, std::ios::end );
-      contents.resize( in.tellg() );
+      contents.resize( static_cast< std::string::size_type >( in.tellg() ) );
       in.seekg( 0, std::ios::beg );
       in.read( &contents[ 0 ], contents.size() );
       in.close();