minor fixes related to draft

src/PIL/Image.py

@@ -1186,12 +1186,12 @@ class Image(object):
         """
         Configures the image file loader so it returns a version of the
         image that as closely as possible matches the given mode and
-        size.  For example, you can use this method to convert a color
+        size. For example, you can use this method to convert a color
         JPEG to greyscale while loading it, or to extract a 128x192
         version from a PCD file.
 
         Note that this method modifies the :py:class:`~PIL.Image.Image` object
-        in place.  If the image has already been loaded, this method has no
+        in place. If the image has already been loaded, this method has no
         effect.
 
         Note: This method is not implemented for most images. It is

src/PIL/ImageFile.py

@@ -119,11 +119,6 @@ class ImageFile(Image.Image):
         if not self.mode or self.size[0] <= 0:
             raise SyntaxError("not identified by this driver")
 
-    def draft(self, mode, size):
-        """Set draft mode"""
-
-        pass
-
     def get_format_mimetype(self):
         if self.custom_mimetype:
             return self.custom_mimetype

src/PIL/JpegImagePlugin.py

@@ -415,7 +415,7 @@ class JpegImageFile(ImageFile.ImageFile):
             return
 
         d, e, o, a = self.tile[0]
-        scale = 0
+        scale = 1
 
         if a[0] == "RGB" and mode in ["L", "YCbCr"]:
             self.mode = mode