QImageReader QImageReaderPrivate::getText() incorrectly parses Description string

The QImageReader QImageReaderPrivate::getText() method does not correctly parse the QImageIOHandler::Description string.

According to the documentation for the QImageIOHandler::Description ImageOption the format of all key,value pairs is:

key:value\n\n

Note that the ':' is the required delimiter of the key and value; no embedded spaces are required; and every pair, including the last, is terminated by two newline characters.

The QImageReaderPrivate::getText() method produces a QMap of name,value QString pairs by parsing the return value of the Description option: The Description string is split into QString segments on the two newline characters (note that this results in a final empty segment). For each segment, if the index of the ':' delimiter is non-negative and the index of any space character (' ') is less than the delimiter index (note that when no space character is present this index will be -1) the resulting key,value pair in the QMap is "Description" and the entire segment QString::simplified; otherwise the key,value pair is the part of the segment before the delimiter and the part after the segment QString::simplified.

The conditional determining the key,value pair is incorrect! For example, the typical segment "key:value" will result in a key of "Description" key and a value of "key:value". This can be expected to occur for most, if not all, segments in the formatted Description string, and so only the last "Description" segment will remain in the QMap; all other key:value pairs will be lost. Even if the the value contains a space character it will be incorrectly selected as "alue" instead of "value".