Update MISRA queries and tests after merging location tables

Author: jketema

c/misra/test/rules/RULE-2-4/UnusedTagDeclaration.expected

@@ -3,5 +3,4 @@
 | test.c:17:6:17:7 | E1 | struct E1 has an unused tag. |
 | test.c:31:10:31:11 | S7 | struct S7 has an unused tag. |
 | test.c:50:8:50:10 | S10 | struct S10 has an unused tag. |
-| test.c:66:3:66:14 | S13 | struct S13 has an unused tag. |
 | test.c:79:8:79:10 | s14 | struct s14 has an unused tag. |

c/misra/test/rules/RULE-2-4/test.c

@@ -63,9 +63,9 @@ struct S12 { // COMPLIANT
   };
 
 void testMacroNameUsed() {
-  STRUCT_MACRO // COMPLIANT[FALSE_POSITIVE] - although the struct generated by
-               // the macro is never used in this expansion, it may be used in
-               // other expansions, so we don't want to report it as unused
+  STRUCT_MACRO // COMPLIANT - although the struct generated by the macro is
+               // never used in this expansion, it may be used in other
+               // expansions, so we don't want to report it as unused
 }
 
 void testMacroNameNotUsed() {

cpp/common/src/codingstandards/cpp/Loops.qll

@@ -339,7 +339,8 @@ predicate isInvalidLoop(ForStmt forLoop, string reason, Locatable reasonLocation
   isForLoopWithMulipleCounters(forLoop) and
   reason = "it uses multiple loop counters$@" and
   reasonLabel = "" and
-  reasonLocation.getLocation() instanceof UnknownExprLocation
+  reasonLocation instanceof File and
+  reasonLocation.getLocation() instanceof UnknownLocation
   or
   isForLoopWithFloatingPointCounters(forLoop, reasonLocation) and
   reason = "it uses a loop counter '$@' of type floating-point" and