Issue#1409: Fixing crash with rules architecture_600 and architecture_601.

Author: jeremiah-c-leary

tests/architecture/rule_600_test_input.fixed.vhd

@@ -118,3 +118,10 @@ begin
     );
 
 end architecture;
+
+-- Testing case where entity name is not detected
+architecture beh of test3 is
+
+begin
+
+end architecture beh;

tests/architecture/rule_600_test_input.vhd

@@ -118,3 +118,10 @@ begin
     );
 
 end architecture;
+
+-- Testing case where entity name is not detected
+architecture beh of test3 is
+
+begin
+
+end architecture beh;

vsg/rules/consistent_interface_token_case.py

@@ -56,7 +56,12 @@ def analyze(self, oFile):
         lArchitectures = oFile.get_tokens_bounded_by(oStartToken, oEndToken)
         for oArchitecture in lArchitectures:
             oArchitecture.name = extract_entity_name(oArchitecture)
-            lArchitectureInterfaces = lInterfaces[oArchitecture.name]
+
+            try:
+                lArchitectureInterfaces = lInterfaces[oArchitecture.name]
+            except KeyError:
+                continue
+
             lToi = extract_token_pairs(oArchitecture, lPairs)
             lToi.extend(extract_component_instantiation_actual_parts(oArchitecture, self.map_aspect_token))
             for oToi in lToi: