[clang][analyzer] Do not analyze opaque types in CXXDeleteChecker (#7…

…0638)

While inheritance can only be expressed if the class has a definition,
in this case one of the types might be opaque to the analyzer.

Fixes a crash encountered while analyzing LLVM.

clang/lib/StaticAnalyzer/Checkers/CXXDeleteChecker.cpp

@@ -114,6 +114,9 @@ void DeleteWithNonVirtualDtorChecker::checkTypedDeleteExpr(
   if (!BaseClass || !DerivedClass)
     return;
 
+  if (!BaseClass->hasDefinition() || !DerivedClass->hasDefinition())
+    return;
+
   if (BaseClass->getDestructor()->isVirtual())
     return;
 
@@ -148,6 +151,9 @@ void CXXArrayDeleteChecker::checkTypedDeleteExpr(
   if (!BaseClass || !DerivedClass)
     return;
 
+  if (!BaseClass->hasDefinition() || !DerivedClass->hasDefinition())
+    return;
+
   if (DE->getOperatorDelete()->getOverloadedOperator() != OO_Array_Delete)
     return;