Got rid of returning empty range list in position strategies (in places where...

Got rid of returning empty range list in position strategies (in places where they depend on syntax errors).

compiler/frontend/src/org/jetbrains/jet/lang/diagnostics/Errors.java

@@ -288,7 +288,6 @@ public interface Errors {
         @NotNull
         @Override
         public List<TextRange> mark(@NotNull JetWhenExpression element) {
-            if (hasSyntaxError(element)) return Collections.emptyList();
             return markElement(element.getWhenKeywordElement());
         }
     });

compiler/frontend/src/org/jetbrains/jet/lang/diagnostics/PositioningStrategies.java

@@ -74,14 +74,11 @@ public class PositioningStrategies {
         @NotNull
         @Override
         public List<TextRange> mark(@NotNull PsiNameIdentifierOwner element) {
-            if (element.getLastChild() instanceof PsiErrorElement) {
-                return Collections.emptyList();
-            }
             PsiElement nameIdentifier = element.getNameIdentifier();
             if (nameIdentifier != null) {
                 return markElement(nameIdentifier);
             }
-            return Collections.emptyList();
+            return markElement(element);
         }
     };