Small fixes pointed out by pylint.

Signed-off-by: Chris Lalancette <clalancette@gmail.com>

Author: clalancette

pycdlib/pycdlib.py

@@ -2609,9 +2609,7 @@ def __init__(self, total, progress_cb, progress_opaque):
         def call(self, length):
             # type: (int) -> None
             """Add the length to done, then call progress_cb if it is not None."""
-            self.done += length
-            if self.done > self.total:
-                self.done = self.total
+            self.done = min(self.done + length, self.total)
             self._call(self.done, self.total, self.progress_opaque)
 
         def finish(self):

pycdlib/utils.py

@@ -106,10 +106,8 @@ def copy_data_yield(data_length, blocksize, infp, outfp):
      Nothing.
     """
     left = data_length
-    readsize = blocksize
     while left > 0:
-        if left < readsize:
-            readsize = left
+        readsize = min(blocksize, left)
         data = infp.read(readsize)
         # We have seen ISOs in the wild (Tribes Vengeance 1of4.iso) that
         # lie about the size of their files, causing reads to fail (since