gsktransform: Fixes crash in normalize_angle
If passing a NaN into normalize_angle it crashes.
The fix is simply to check if the angle is NaN and than return 0. The expression angle != angle is only true if angle is NaN.
Fixes #4489
If passing a NaN into normalize_angle it crashes.
The fix is simply to check if the angle is NaN and than return 0. The expression angle != angle is only true if angle is NaN.
Fixes #4489