Merge pull request #7021 from radarhere/getmask2

Do not render text if image has zero width or height

src/PIL/ImageFont.py

@@ -767,6 +767,7 @@ class FreeTypeFont:
         offset = offset[0] - stroke_width, offset[1] - stroke_width
         Image._decompression_bomb_check(size)
         im = fill("RGBA" if mode == "RGBA" else "L", size, 0)
+        if min(size):
             self.font.render(
                 text,
                 im.id,