Commitd396606

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Fix comment in procarray.c.

Commitfea10a6 renamed VariableCacheData.nextFullXid to nextXid.But commitdc7420c introduced the comment mentioning nextFullXid.This commit changes"nextFullXid" to "nextXid" in the comment.Author: Zhang MingliDiscussion:https://postgr.es/m/642BA615-4B28-4B0C-BDF6-4D33E366BCDF@gmail.com

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Original file line number	Diff line number	Diff line change
`@@ -4212,8 +4212,8 @@ GlobalVisTestIsRemovableXid(GlobalVisState *state, TransactionId xid)`
`4212`	`4212`	`/*`
`4213`	`4213`	`* Convert 32 bit argument to FullTransactionId. We can do so safely`
`4214`	`4214`	`* because we know the xid has to, at the very least, be between`
`4215`		`- * [oldestXid,nextFullXid), i.e. within 2 billion of xid. To avoid taking`
`4216`		`- *alock to determine either, we can just compare with`
	`4215`	`+ * [oldestXid,nextXid), i.e. within 2 billion of xid. To avoid taking a`
	`4216`	`+ * lock to determine either, we can just compare with`
`4217`	`4217`	`* state->definitely_needed, which was based on those value at the time`
`4218`	`4218`	`* the current snapshot was built.`
`4219`	`4219`	`*/`

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