CLEANUP: connection: fix double negation on memcmp()

Nothing harmful in here, just clarify that it applies to the whole
expression.

(cherry picked from commit 42ff05e2d3d10e8a1e070e66e8883c5eabe196d7)
(cherry picked from commit c4809151b4c9ccc312cb451e99fd556e867242fc)
1 file changed