3. Moore complains that McCauley was allowed to testify over his objections as to previous trouble he had had with Pearson. The court admitted this testimony at that particular time subject to later objections, but no further objection was ever made. Likewise, no objection was made to colloquy between the district attorney and Moore concerning whether Pearson was going to testify for the defense, which is now enumerated as error. There being no ruling of the trial court, there is nothing for this court to consider. Johnson v. State, 136 Ga. App. 629 (1) ( 222 S.E.2d 146) (1975); Pounds v. State, 136 Ga. App. 852, 853 (5), supra. 4. Charges on credibility of witnesses, conspiracy and renunciation of criminal purpose were correct statements of the law, adjusted to the evidence presented and proper guidelines for the jury as established by past appellate decisions.