Fix -show-exclude-libs

Had to move the parsing of -show-exclude-lib up to the block where the
version options are parsed, otherwise a call like
./linuxdeployqt<...>.AppImage -show-exclude-libs
wouldn't work.

CC @patrickelectric

tools/linuxdeployqt/main.cpp

@@ -34,6 +34,7 @@
 #include <QSettings>
 #include <QDirIterator>
 #include <sstream>
+#include "excludelist.h"
 
 int main(int argc, char **argv)
 {
@@ -60,6 +61,10 @@ int main(int argc, char **argv)
             // can just exit normally, version has been printed above
             return 0;
         }
+        if (argument == QByteArray("-show-exclude-libs")) {
+            qInfo() << generatedExcludelist;
+            return 0;
+        }
     }
 
     if (argc < 2 || (firstArgument.startsWith("-"))) {
@@ -426,9 +431,6 @@ int main(int argc, char **argv)
             LogDebug() << "Argument found:" << argument;
             int index = argument.indexOf("=");
             excludeLibs = QString(argument.mid(index + 1)).split(",");
-        } else if (argument == QByteArray("-show-exclude-libs")) {
-            qInfo() << EXCLUDELIST;
-            return 0;
         } else if (argument.startsWith("--")) {
             LogError() << "Error: arguments must not start with --, only -:" << argument << "\n";
             return 1;