bitbake: lib/bb: Clean up use of len()

(Bitbake rev: bbbc843e86639604d00d76b1949b94a78cf1d95d)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/fetch2/__init__.py

@@ -770,7 +770,7 @@ def get_srcrev(d, method_name='sortable_revision'):
         if urldata[u].method.supports_srcrev():
             scms.append(u)
 
-    if len(scms) == 0:
+    if not scms:
         raise FetchError("SRCREV was used yet no valid SCM was found in SRC_URI")
 
     if len(scms) == 1 and len(urldata[scms[0]].names) == 1:
@@ -1636,7 +1636,7 @@ class Fetch(object):
         if localonly and cache:
             raise Exception("bb.fetch2.Fetch.__init__: cannot set cache and localonly at same time")
 
-        if len(urls) == 0:
+        if not urls:
             urls = d.getVar("SRC_URI").split()
         self.urls = urls
         self.d = d