This change fixes a type warning in gui_file_dialog.h...
```
examples/custom_file_dialog/gui_file_dialog.h: In function ‘GuiFileDialog’:
examples/custom_file_dialog/gui_file_dialog.h:313:198: warning: passing argument 2 of ‘GuiListViewEx’ from incompatible pointer type [-Wincompatible-pointer-types]
313 | dowBounds.y + 48 + 20, state->windowBounds.width - 16, state->windowBounds.height - 60 - 16 - 68 }, dirFilesIcon, state->dirFiles.count, &state->itemFocused, &state->filesListScrollIndex, state->filesListActive);
| ^~~~~~~~~~~~
| |
| char **
In file included from examples/custom_file_dialog/gui_file_dialog.h:120
examples/custom_file_dialog/../../src/raygui.h:2762:50: note: expected ‘const char **’ but argument is of type ‘char **’
2762 | int GuiListViewEx(Rectangle bounds, const char **text, int count, int *focus, int *scrollIndex, int active)
```
