Remove some problems detected by cppcheck

Src/Containers/FBlockAllocator.hpp

Src/Kernels/Chebyshev/FChebM2LHandler.hpp

Src/Kernels/Chebyshev/FChebSymM2LHandler.hpp

Src/Kernels/Interpolation/FInterpSymmetries.hpp

Tests/Utils/testLapack.cpp

Tests/Utils/testLapackQR.cpp