Melvin Purvis played by Christian Bale ending incorrect did not suicide

The details of Melvin Purvis (the character played by Christian Bale) are incorrect as Melvin Purvis did not commit suicide. This is an insult to the memory of this person and should be corrected. With little detail provided it implies that following the death of John Dillinger that Melvin Purvis committed suicide perhaps suggesting that he was 'disappointed' with his role or failure to resolve the issue earlier with less fatalities, as suggested in a scene with J. Edgar Hoover played by Billy Crudup.
The actual true story was that following the death of John Dillinger in 1934, Melvin Purvis continued to serve in the FBI until 1936 and then he went on to practice law. Whilst with the FBI from 1927, Purvis captured more public enemies than any other agent in FBI history and this is a record that still stands today. In 1936 he published a memoir of his years as an investigator with the Bureau, entitled American Agent.
In 1937, he became engaged to actress Janice Jarratt, but they never married. He later married Marie Rosanne Willcox, and they had three sons.
Purvis then served in the United States Army as an intelligence officer during World War II, reaching the rank of colonel. He assisted with compiling evidence against Nazi leaders in the Nuremberg trials (1945-1949).
Some eleven years later and 26 years following the death of John Dillinger, at 56 years old, in February 29, 1960, at his home in Florence, South Carolina Purvis died from a gunshot wound to the head. The idea that he committed suicide is 'wrongly suggested' because he dies from the pistol given to him by fellow agents when he resigned from the FBI. Although the FBI investigated his death and declared it a suicide, the official coroner's report did not label the cause of death as such. A later investigation suggested that Purvis may have shot himself accidentally while trying to extract a tracer bullet jammed in the pistol.
To fail to acknowledge this much 'life' and 'accomplishments' by this man including serving his country, simply to 'dishonour' him to sell movie tickets for this movie is a disgrace. I am also disappointed that Christian Bale did not have this checked and corrected. I am a strong admirer of Christian Bale and I feel he truely understands the characters and roles he plays. I feel that the character he played, would not have committed suicide and therefore this is at odds with the end script.