fix code style of try catch blocks

core/ajax/publicpreview.php

@@ -84,7 +84,7 @@ try{
 	$preview->setScalingUp($scalingUp);
 
 	$preview->show();
-}catch(\Exception $e) {
+} catch (\Exception $e) {
 	\OC_Response::setStatus(500);
 	\OC_Log::write('core', $e->getmessage(), \OC_Log::ERROR);
 	\OC\Preview::showErrorPreview();

lib/preview/libreoffice-cl.php

@@ -35,7 +35,7 @@ class Office extends Provider {
 		try{
 			$pdf = new \imagick($absPath . '.pdf' . '[0]');
 			$pdf->setImageFormat('jpg');
-		}catch (\Exception $e) {
+		} catch (\Exception $e) {
 			unlink($absPath);
 			unlink($absPath . '.pdf');
 			\OC_Log::write('core', $e->getmessage(), \OC_Log::ERROR);

lib/preview/pdf.php

@@ -22,7 +22,7 @@ if (extension_loaded('imagick')) {
 			try{
 				$pdf = new \imagick($tmpPath . '[0]');
 				$pdf->setImageFormat('jpg');
-			}catch (\Exception $e) {
+			} catch (\Exception $e) {
 				\OC_Log::write('core', $e->getmessage(), \OC_Log::ERROR);
 				return false;
 			}

lib/preview/svg.php

@@ -27,7 +27,7 @@ if (extension_loaded('imagick')) {
 
 				$svg->readImageBlob($content);
 				$svg->setImageFormat('jpg');
-			}catch(\Exception $e){
+			} catch (\Exception $e) {
 				\OC_Log::write('core', $e->getmessage(), \OC_Log::ERROR);
 				return false;
 			}