Cosmetics (trailing whitespace, comment conventions, etc.)

Signed-off-by: Daira Hopwood <daira@jacaranda.org>

qa/rpc-tests/invalidateblock.py

@@ -14,19 +14,17 @@ from test_framework.util import initialize_chain_clean, start_node, \
 import time
 
 class InvalidateTest(BitcoinTestFramework):
-    
-        
     def setup_chain(self):
         print("Initializing test directory "+self.options.tmpdir)
         initialize_chain_clean(self.options.tmpdir, 3)
-                 
+
     def setup_network(self):
         self.nodes = []
-        self.is_network_split = False 
+        self.is_network_split = False
         self.nodes.append(start_node(0, self.options.tmpdir, ["-debug"]))
         self.nodes.append(start_node(1, self.options.tmpdir, ["-debug"]))
         self.nodes.append(start_node(2, self.options.tmpdir, ["-debug"]))
-        
+
     def run_test(self):
         print "Make sure we repopulate setBlockIndexCandidates after InvalidateBlock:"
         print "Mine 4 blocks on Node 0"