Merge pull request #4655 from defrance/patch-103

ODT generation : No segment defined in odt file is not an error

htdocs/core/modules/project/doc/doc_generic_project_odt.modules.php

@@ -697,11 +697,16 @@ class doc_generic_project_odt extends ModelePDFProjects
 					$odfHandler->mergeSegment($listlines);
 				}
 				catch(OdfException $e)
+				{
+					$ExceptionTrace=$e->getTrace();
+					// no segment defined on ODT is not an error
+					if($ExceptionTrace[0]['function'] != 'setSegment')
 					{
 						$this->error=$e->getMessage();
 						dol_syslog($this->error, LOG_WARNING);
 						return -1;
 					}
+				}
 
 				// Replace tags of project files
 				try