Correctly report downloaded file size in debug messages.

Previously, the return value of fp.write() was used, however for
text files this counts the number of characters written, not the
number of bytes, and for non-ASCII content these differ.

av98.py

@@ -649,6 +649,7 @@ you'll be able to transparently follow links to Gopherspace!""")
                 else:
                     print("{} Received {} MiB...".format(spinner, chunk_count/10.0), end="\r")
         print(" "*80, end="\r") # Clean up prompt space
+        size = len(body)
 
         # Determine file mode
         if mime.startswith("text/"):
@@ -666,9 +667,8 @@ you'll be able to transparently follow links to Gopherspace!""")
             encoding = None
 
         # Write
-        fp = open(destination or self.raw_file_buffer, mode=mode, encoding=encoding)
-        size = fp.write(body)
-        fp.close()
+        with open(destination or self.raw_file_buffer, mode=mode, encoding=encoding) as fp:
+            fp.write(body)
 
         return size