Another React Native Crash.

gistfile1.txt

- (RCTSizeComparison)attemptScale:(CGFloat)scale
                        inStorage:(NSTextStorage *)textStorage
                         forFrame:(CGRect)frame
{
  NSLayoutManager *layoutManager = [textStorage.layoutManagers firstObject];
  NSTextContainer *textContainer = [layoutManager.textContainers firstObject];

  NSRange glyphRange = NSMakeRange(0, textStorage.length);
  [textStorage beginEditing];
  [textStorage enumerateAttribute:NSFontAttributeName
                           inRange:glyphRange
                           options:0
                        usingBlock:^(UIFont *font, NSRange range, BOOL *stop)
   {
     if (font) {
       UIFont *originalFont = [self.attributedString attribute:NSFontAttributeName
                                                       atIndex:range.location
                                                effectiveRange:&range];
       UIFont *newFont = [font fontWithSize:originalFont.pointSize * scale];
       [textStorage removeAttribute:NSFontAttributeName range:range];
       [textStorage addAttribute:NSFontAttributeName value:newFont range:range];
     }
   }];

  [textStorage endEditing];

  NSInteger linesRequired = [self numberOfLinesRequired:[textStorage.layoutManagers firstObject]];
  CGSize requiredSize = [self calculateSize:textStorage];

  BOOL fitSize = requiredSize.height <= CGRectGetHeight(frame) &&
  requiredSize.width <= CGRectGetWidth(frame);

  BOOL fitLines = linesRequired <= textContainer.maximumNumberOfLines ||
  textContainer.maximumNumberOfLines == 0;

  if (fitLines && fitSize) {
    if ((requiredSize.width + (CGRectGetWidth(frame) * RCTTextAutoSizeWidthErrorMargin)) > CGRectGetWidth(frame))
    {
      return RCTSizeWithinRange;
    } else {
      return RCTSizeTooSmall;
    }
  } else {
    return RCTSizeTooLarge;
  }
}

Ln 16 seems to be crashing. Could likely use a range check.