Fixed another plotpy V1 regression (thx to guiqwt)

Fixes aspect ratio zoom issue when resizing plot widget

Author: PierreRaybaut

plotpy/plot/base.py

@@ -2209,11 +2209,7 @@ def apply_aspect_ratio(self, full_scale: bool = False) -> None:
         dy2 = (h * dx1) / (w * self.__aspect_ratio)
         dx2 = (w * dy1 * self.__aspect_ratio) / h
 
-        fix_yaxis = False
-        if dy2 > dy1:
-            fix_yaxis = True
-        elif full_scale:
-            fix_yaxis = True
+        fix_yaxis = not full_scale or dy2 > dy1
 
         if fix_yaxis:
             delta_y = 0.5 * (dy2 - dy1)