Comment 2 for bug 1727178

StacktraceTop:
 g_malloc0 (n_bytes=18446744072098939136) at ../../../../glib/gmem.c:129
 blur_pixels (pixels_in=pixels_in@entry=0x55e9267e4ec0 "", width_in=width_in@entry=16, height_in=height_in@entry=16, rowstride_in=rowstride_in@entry=16, blur=<optimized out>, width_out=width_out@entry=0x7ffd934ce554, height_out=height_out@entry=0x7ffd934ce558, rowstride_out=0x7ffd934ce55c) at ../src/st/st-private.c:280
 _st_create_shadow_pipeline (shadow_spec=shadow_spec@entry=0x55e9267f1300, src_texture=src_texture@entry=0x55e9269021e0) at ../src/st/st-private.c:372
 _st_create_shadow_pipeline_from_actor (shadow_spec=0x55e9267f1300, actor=0x55e92005d030) at ../src/st/st-private.c:434
 st_icon_update_shadow_pipeline (icon=icon@entry=0x55e9269180f0) at ../src/st/st-icon.c:278