Fix InTableText mode

Author: jgraham

src/html5lib/html5parser.py

@@ -1582,8 +1582,9 @@ def processEOF(self):
         #Stop parsing
 
     def processSpaceCharacters(self, token):
+        originalPhase = self.parser.phase
         self.parser.phase = self.parser.phases["inTableText"]
-        self.parser.phase.originalPhase = self
+        self.parser.phase.originalPhase = originalPhase
         self.parser.phase.characterTokens.append(token)
 
     def processCharacters(self, token):
@@ -1704,7 +1705,8 @@ def processCharacters(self, token):
 
     def processSpaceCharacters(self, token):
         #pretty sure we should never reach here
-        assert False
+        self.characterTokens.append(token)
+#        assert False
 
     def processStartTag(self, token):        
         self.flushCharacters()