Use the correct line number in 'Part::showSourceLocation'

interfaces/viewerinterface.h

@@ -31,6 +31,9 @@ class OKULAR_EXPORT ViewerInterface
         /**
          * Show the specified source location centrally in the viewer.
          *
+         * @param fileName source file name
+         * @param line in the source file, starts from 0
+         * @param column in the source file, starts from 0
          * @param showGraphically controls whether the given source location will be
          *                        shown graphically in the viewer (if that feature is globally activated)
          */

part.cpp

@@ -836,7 +836,7 @@ KUrl Part::realUrl() const
 
 void Part::showSourceLocation(const QString& fileName, int line, int column, bool showGraphically)
 {
-    const QString u = QString( "src:%1 %2" ).arg( line ).arg( fileName );
+    const QString u = QString( "src:%1 %2" ).arg( line + 1 ).arg( fileName );
     GotoAction action( QString(), u );
     m_document->processAction( &action );
     if( showGraphically )