wic: fix pylint warning multiple-statements

Fixed pylint warning:
More than one statement on a single line (multiple-statements)

(From OE-Core rev: fa43b8b482a9423208f5d2c12994fa15bcbddbb2)

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/lib/wic/plugin.py

@@ -82,7 +82,8 @@ class PluginMgr(object):
 
     def _load_all(self):
         for (pdir, loaded) in self.plugin_dirs.iteritems():
-            if loaded: continue
+            if loaded:
+                continue
 
             sys.path.insert(0, pdir)
             for mod in [x[:-3] for x in os.listdir(pdir) if x.endswith(".py")]: