E0395 needs to be updated to new format

[sophiajt]

From: src/test/compile-fail/E0395.rs

E0395 needs a span_label, updating it from:

error[E0395]: raw pointers cannot be compared in statics
  --> src/test/compile-fail/E0395.rs:14:22
   |
14 | static BAZ: bool = { (&FOO as *const i32) == (&BAR as *const i32) }; //~ ERROR E0395
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

To:

error[E0395]: raw pointers cannot be compared in statics
  --> src/test/compile-fail/E0395.rs:14:22
   |
14 | static BAZ: bool = { (&FOO as *const i32) == (&BAR as *const i32) }; //~ ERROR E0395
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ comparing raw pointers in static

[clementmiao]

I can take this