Fix false negative with multi-dimensional array

[KenPatrickLehrmann]

void f() {
  char  foo[2][2];
  char *bar[2];
  bar[0] = foo[0];
  bar[1] = foo[1];
  bar[0][0] = 'a';
}

would give a FP:

[test.cpp:2]: (style) Variable 'foo' can be declared with const\n"

[pfultz2]

@danmar Any feedback on this PR?

[pfultz2]

There appears to be merge conflicts for this PR.