[clang-tidy] Detect bugs in bugprone-misplaced-operator-in-strlen-in-alloc...

[clang-tidy] Detect bugs in bugprone-misplaced-operator-in-strlen-in-alloc even in the case the allocation function is called using a constant function pointer

Detect bugs even if a function of the malloc() family is called using a constant pointer.

llvm-svn: 318913