Fix typo in DiffMatchPatchCFUtilities.c

Author: alur

objectivec/DiffMatchPatchCFUtilities.c

@@ -488,7 +488,7 @@ CFStringRef diff_linesToCharsMungeCFStringCreate(CFStringRef text, CFMutableArra
  const UniChar hashChar = (UniChar)hash;
  CFStringAppendCharacters(chars, &hashChar, 1);
  } else {
- if (CFArrayGetCount(lineArray) == maxLength) {
+ if (CFArrayGetCount(lineArray) == maxLines) {
  // Bail out at 65535 because char 65536 == char 0.
  line = diff_CFStringCreateJavaSubstring(text, lineStart, textLength);
  lineEnd = textLength;