ReceiveCommits: Fix comparison to ensure correct log message

The condition added in change Ie838da01c prevents the commit count
from being incremented, resulting in the log message:

  "Validated {} new commits"

always showing "0 new commits".

Change-Id: I44456dfa3587fac1cac29d61ded51203274ae940
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/git/receive/ReceiveCommits.java b/gerrit-server/src/main/java/com/google/gerrit/server/git/receive/ReceiveCommits.java
index fba4aec..ef1f22f 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/git/receive/ReceiveCommits.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/git/receive/ReceiveCommits.java
@@ -2748,7 +2748,7 @@
         // Even if skipValidation is set, we still get here when at least one plugin
         // commit validator requires to validate all commits. In this case, however,
         // we don't need to check the commit limit.
-        if (!skipValidation && ++n > limit) {
+        if (++n > limit && !skipValidation) {
           logDebug("Number of new commits exceeds limit of {}", limit);
           addMessage(
               "Cannot push more than "