[Bug]: Solve Valgrind issues

[mcbarton]

Description of bug

Looking at the ci we skip a large number of tests under Valgrind. This is an issue when has been opened to keep track of them, with the intention of fixing them.

[  SKIPPED ] CppInterOpTest/InProcessJIT.FunctionReflectionTestInstantiateTemplateFunctionFromString
[  SKIPPED ] CppInterOpTest/InProcessJIT.FunctionReflectionTestLookupConstructors
[  SKIPPED ] CppInterOpTest/InProcessJIT.FunctionReflectionTestGetClassTemplatedMethods
[  SKIPPED ] CppInterOpTest/InProcessJIT.FunctionReflectionTestGetFunctionAddress
[  SKIPPED ] CppInterOpTest/InProcessJIT.FunctionReflectionTestJitCallAdvanced
[  SKIPPED ] CppInterOpTest/InProcessJIT.FunctionReflectionTestJitCallDebug
[  SKIPPED ] CppInterOpTest/InProcessJIT.FunctionReflectionTestGetFunctionCallWrapper
[  SKIPPED ] CppInterOpTest/InProcessJIT.FunctionReflectionTestConstruct
[  SKIPPED ] CppInterOpTest/InProcessJIT.FunctionReflectionTestConstructPOD
[  SKIPPED ] CppInterOpTest/InProcessJIT.FunctionReflectionTestConstructNested
[  SKIPPED ] CppInterOpTest/InProcessJIT.FunctionReflectionTestConstructArray
[  SKIPPED ] CppInterOpTest/InProcessJIT.FunctionReflectionTestDestruct
[  SKIPPED ] CppInterOpTest/InProcessJIT.FunctionReflectionTestDestructArray
[  SKIPPED ] CppInterOpTest/InProcessJIT.InterpreterTestEvaluate
[  SKIPPED ] CppInterOpTest/InProcessJIT.InterpreterTestProcess
[  SKIPPED ] CppInterOpTest/InProcessJIT.InterpreterTestExternalInterpreterTest
[  SKIPPED ] CppInterOpTest/InProcessJIT.JitTestInsertOrReplaceJitSymbol
[  SKIPPED ] CppInterOpTest/InProcessJIT.JitTestStreamRedirectJIT
[  SKIPPED ] CppInterOpTest/InProcessJIT.ScopeReflectionTestDemangle
[  SKIPPED ] CppInterOpTest/InProcessJIT.ScopeReflectionTestInstantiateTemplateFunctionFromString
[  SKIPPED ] CppInterOpTest/InProcessJIT.ScopeReflectionTestIncludeVector
[  SKIPPED ] CppInterOpTest/InProcessJIT.ScopeReflectionTestGetOperator
[  SKIPPED ] CppInterOpTest/InProcessJIT.TypeReflectionTestIsSmartPtrType
[  SKIPPED ] CppInterOpTest/InProcessJIT.VariableReflectionTestDatamembersWithAnonymousStructOrUnion
[  SKIPPED ] CppInterOpTest/InProcessJIT.VariableReflectionTestGetTypeAsString
[  SKIPPED ] CppInterOpTest/InProcessJIT.VariableReflectionTestVariableOffsetsWithInheritance
[  SKIPPED ] CppInterOpTest/InProcessJIT.VariableReflectionTestStaticConstExprDatamember