test-phases-exchange: properly conditionalize output

I forgot to invert the conditions, and the test runner didn't catch it[1].  But
since only '&&' is supported in the per-line feature tests, this won't work
anyway.

[1] https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-July/101941.html

tests/test-phases-exchange.t

@@ -1302,12 +1302,17 b' Test that clone behaves like pull and do'
 does.  The conditional output accounts for changes in the conditional block
 above.
 
+#if unix-permissions no-root
+  $ hg -R Upsilon phase -q --force --draft 2
+  test-debug-phase: move rev 2: 0 -> 1
+#else
   $ hg -R Upsilon phase -q --force --draft 2
   test-debug-phase: move rev 2: 0 -> 1
-  test-debug-phase: move rev 3: 0 -> 1 (unix-permissions no-root !)
-  test-debug-phase: move rev 7: 0 -> 1 (unix-permissions no-root !)
-  test-debug-phase: move rev 8: 0 -> 1 (unix-permissions no-root !)
-  test-debug-phase: move rev 9: 0 -> 1 (unix-permissions no-root !)
+  test-debug-phase: move rev 3: 0 -> 1
+  test-debug-phase: move rev 7: 0 -> 1
+  test-debug-phase: move rev 8: 0 -> 1
+  test-debug-phase: move rev 9: 0 -> 1
+#endif
 
   $ hg clone -q Upsilon Pi -r 7
   test-debug-phase: new rev 0:  x -> 0