The file "DotNetNuke.Schema.SqlDataProvider" contains a typo in the part which creates a stored procedure "Journal_Comment_Like" on line 18623:
SET @cxml = (SELECT CommentXML FROM {databaseOwner}[{objectQualifier}Journal_Comment] WHERE CommentId = @CommentId AND JournalId = @JournalId)
"Journal_Comment" should be "Journal_Comments"
Verified the code change in source 7.3.3 build 75
Ran upgrade with Journal comments in place
No errors and the Journals were still accessible after upgrade and the data was present and correct.
Closed against 7.3.3 build 75
Re-verified Platform 7.3.4 build 45