Fix cdrdao version detection RE

Cuts 'Cdrdao 1.2.5 - (C) Andreas Mueller <andreas@daneb.de>' at the whitespace => '1.2.5'

Signed-off-by: Loïc CORBASSON <loic.devel@corbasson.fr>

whipper/program/cdrdao.py

@@ -184,7 +184,7 @@ def version():
         logger.warning("cdrdao version detection failed: "
                        "return code is %s", cdrdao.returncode)
         return None
-    m = re.compile(r'^Cdrdao version (?P<version>.*)').search(
+    m = re.compile(r'^Cdrdao version (?P<version>[^ ]*)').search(
         err.decode('utf-8'))
     if not m:
         logger.warning("cdrdao version detection failed: "