PVS-Studio warning V563 for TPP

void MascotConverter::init(....) {
  ...
  if(line_len > 8 && line[0] == 'r' && line[1] == 'e' &&
     line[2] == 'l' && line[3] == 'e' && line[4] == 'a' &&
     line[5] == 's' && line[6] == 'e' && line[7] == '=')
    if(database_ == NULL)
      database_ = strCopy(line+8);
  else if(line_len > 5 && line[0] == 'F' && line[1] == 'I' &&
          line[2] == 'L' && line[3] == 'E' && line[4] == '=') {
    header_ = strCopy(line+5);
  ...
}

Because there are no parentheses, else refers to another if.

This suspicious code was found in TPP project by PVS-Studio static code analyzer.
Warning message is:
V563 It is possible that this 'else' branch must apply to the previous 'if' statement. Mascot2XML mascotconverter.cxx 895

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/