ProjectExplorer: Tighten the LdParser a bit

Just a hotfix. This parser is still much too eager, and a lot of unit
tests only pass because it wrongly matches things that should be caught
elsewhere.

Fixes: QTCREATORBUG-25617
Change-Id: I91161a103b41239c3aac9e119c21e152b0437a32
Reviewed-by: hjk <hjk@qt.io>

src/plugins/projectexplorer/ldparser.cpp

@@ -116,7 +116,7 @@ Utils::OutputLineParser::Result LdParser::handleLine(const QString &line, Utils:
     }
 
     match = m_regExpLinker.match(lne);
-    if (match.hasMatch()) {
+    if (match.hasMatch() && lne.count(':') >= 2) {
         bool ok;
         int lineno = match.captured(7).toInt(&ok);
         if (!ok)