Fixed #1923: make sure we don't strip meaningful whitespace in PKG-INFO Description field
diff --git a/Lib/distutils/util.py b/Lib/distutils/util.py
index 6bff44f..b8e4952 100644
--- a/Lib/distutils/util.py
+++ b/Lib/distutils/util.py
@@ -558,8 +558,8 @@
     """Return a version of the string escaped for inclusion in an
     RFC-822 header, by ensuring there are 8 spaces space after each newline.
     """
-    lines = [x.strip() for x in header.split('\n')]
-    sep = '\n' + 8*' '
+    lines = header.split('\n')
+    sep = '\n' + 8 * ' '
     return sep.join(lines)
 
 _RE_VERSION = re.compile('(\d+\.\d+(\.\d+)*)')