Apply suggestions from code review

Co-authored-by: Andrew Murray <3112309+radarhere@users.noreply.github.com>

Author: wiredfool

Tests/test_pyarrow.py

@@ -29,7 +29,7 @@ def _test_img_equals_pyarray(
     px = img.load()
     assert px is not None
     if elts_per_pixel > 1 and mask is None:
-        # have to do element wise comparison when we're comparing
+        # have to do element-wise comparison when we're comparing
         # flattened r,g,b,a to a pixel.
         mask = list(range(elts_per_pixel))
     for x in range(0, img.size[0], int(img.size[0] / 10)):
@@ -56,7 +56,7 @@ def _test_img_equals_int32_pyarray(
     px = img.load()
     assert px is not None
     if mask is None:
-        # have to do element wise comparison when we're comparing
+        # have to do element-wise comparison when we're comparing
         # flattened rgba in an uint32 to a pixel.
         mask = list(range(elts_per_pixel))
     for x in range(0, img.size[0], int(img.size[0] / 10)):

src/libImaging/Storage.c

@@ -757,7 +757,7 @@ ImagingNewArrow(
     if (strcmp(schema->format, "C") == 0            // uint8
         && im->pixelsize == 4                       // storage as 32 bpc
         && schema->n_children == 0                  // make sure schema is well formed.
-        && strcmp(im->arrow_band_format, "C") == 0  // Expected Format
+        && strcmp(im->arrow_band_format, "C") == 0  // expected format
         && 4 * pixels == external_array->length) {  // expected length
         // single flat array, interleaved storage.
         if (ImagingBorrowArrow(im, external_array, 1, array_capsule)) {