Fixes "PossiblyFalseArgument" notices.

Co-authored-by: Côme Chilliet <91878298+come-nc@users.noreply.github.com>
Signed-off-by: Faraz Samapoor <f.samapoor@gmail.com>
Signed-off-by: Faraz Samapoor <fsa@adlas.at>

apps/workflowengine/lib/Check/FileMimeType.php

@@ -157,11 +157,11 @@ class FileMimeType extends AbstractStringCheck implements IFileCheck {
 	protected function isWebDAVRequest() {
 		return substr($this->request->getScriptName(), 0 - strlen('/remote.php')) === '/remote.php' && (
 			$this->request->getPathInfo() === '/webdav' ||
-			str_starts_with($this->request->getPathInfo(), '/webdav/') ||
+			str_starts_with($this->request->getPathInfo() ?? '', '/webdav/') ||
 			$this->request->getPathInfo() === '/dav/files' ||
-			str_starts_with($this->request->getPathInfo(), '/dav/files/') ||
+			str_starts_with($this->request->getPathInfo() ?? '', '/dav/files/') ||
 			$this->request->getPathInfo() === '/dav/uploads' ||
-			str_starts_with($this->request->getPathInfo(), '/dav/uploads/')
+			str_starts_with($this->request->getPathInfo() ?? '', '/dav/uploads/')
 		);
 	}
 
@@ -171,7 +171,7 @@ class FileMimeType extends AbstractStringCheck implements IFileCheck {
 	protected function isPublicWebDAVRequest() {
 		return substr($this->request->getScriptName(), 0 - strlen('/public.php')) === '/public.php' && (
 			$this->request->getPathInfo() === '/webdav' ||
-			str_starts_with($this->request->getPathInfo(), '/webdav/')
+			str_starts_with($this->request->getPathInfo() ?? '', '/webdav/')
 		);
 	}
 

apps/workflowengine/lib/Check/RequestURL.php

@@ -90,9 +90,9 @@ class RequestURL extends AbstractStringCheck {
 		}
 		return substr($this->request->getScriptName(), 0 - strlen('/remote.php')) === '/remote.php' && (
 			$this->request->getPathInfo() === '/webdav' ||
-			str_starts_with($this->request->getPathInfo(), '/webdav/') ||
+			str_starts_with($this->request->getPathInfo() ?? '', '/webdav/') ||
 			$this->request->getPathInfo() === '/dav/files' ||
-			str_starts_with($this->request->getPathInfo(), '/dav/files/')
+			str_starts_with($this->request->getPathInfo() ?? '', '/dav/files/')
 		);
 	}
 }