cppcheck warnings for innoextract in branch 1.9

• AssignmentAddressToInteger (1)
• constParameterReference (1)
• constVariableReference (1)
• shiftTooManyBitsSigned (1)
• variableScope (1)
• noConstructor (2)
• constVariablePointer (4)
• shadowFunction (8)
• duplInheritedMember (11)
• uninitMemberVar (11)
• passedByValue (21)
• knownConditionTrueFalse (33)