treewide: s/comparitor/comparator/

git grep -l comparitor | xargs sed -i 's/comparitor/comparator/g'

Just happened to notice this in a patch that was sent and included one
of the tokens in question.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Acked-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

src/compiler/glsl/ir_rvalue_visitor.cpp

@@ -51,7 +51,7 @@ ir_rvalue_base_visitor::rvalue_visit(ir_texture *ir)
 {
    handle_rvalue(&ir->coordinate);
    handle_rvalue(&ir->projector);
-   handle_rvalue(&ir->shadow_comparitor);
+   handle_rvalue(&ir->shadow_comparator);
    handle_rvalue(&ir->offset);
 
    switch (ir->op) {