Fixed errors in _render.Image that the bunny pointed out.

Author: cherez

buildconfig/stubs/pygame/_render.pyi

@@ -160,7 +160,7 @@ class Image:
     origin: Optional[Iterable[float]]
     flip_x: bool
     flip_y: bool
-    alpha: float
+    alpha: int
     blend_mode: int
     texture: Texture
     srcrect: Rect

src_c/render.c

@@ -1309,9 +1309,9 @@ image_renderer_draw(pgImageObject *self, PyObject *area, PyObject *dest)
                 return 0;
             }
             destrect.w =
-                (float)(areasrcptr ? areasrcptr->w : self->texture->width);
+                (float)(areasrcptr ? areasrcptr->w : self->srcrect->r.w);
             destrect.h =
-                (float)(areasrcptr ? areasrcptr->h : self->texture->height);
+                (float)(areasrcptr ? areasrcptr->h : self->srcrect->r.h);
         }
     }