Fixed clang warning.

3rdparty/freetype/freetype.h

@@ -95352,7 +95352,7 @@ FT_END_HEADER
         if ( face->type1.private_dict.lenIV >= 0 &&
              n < num_glyphs + TABLE_EXTEND       )
         {
-          FT_Byte*  temp;
+          FT_Byte*  temp = NULL;
           if ( size <= face->type1.private_dict.lenIV )
           {
             error = T1_Err_Invalid_File_Format;