Tools/MapExtractor: Fix typo in areaid error output.

Author: svetilo12
Closes 4395

--HG--
branch : trunk

src/tools/map_extractor/System.cpp

@@ -400,7 +400,7 @@ bool ConvertADT(char *filename, char *filename2, int cell_y, int cell_x, uint32
                     area_flags[i][j] = areas[areaid];
                     continue;
                 }
-                printf("File: filename\nCan't find area flag for areaid %u [%d, %d].\n", filename, areaid, cell->ix, cell->iy);
+                printf("File: %s\nCan't find area flag for areaid %u [%d, %d].\n", filename, areaid, cell->ix, cell->iy);
             }
             area_flags[i][j] = 0xffff;
         }