Fix quotes in exception messages

Author: fabpot

Crypto/SMime.php

@@ -24,7 +24,7 @@ abstract class SMime
     protected function normalizeFilePath(string $path): string
     {
         if (!file_exists($path)) {
-            throw new RuntimeException(sprintf('File does not exist: %s.', $path));
+            throw new RuntimeException(sprintf('File does not exist: "%s".', $path));
         }
 
         return 'file://'.str_replace('\\', '/', realpath($path));

Tests/Crypto/SMimeTestCase.php

@@ -33,7 +33,7 @@ protected function generateTmpFilename(): string
     protected function normalizeFilePath(string $path): string
     {
         if (!file_exists($path)) {
-            throw new RuntimeException(sprintf('File does not exist: %s', $path));
+            throw new RuntimeException(sprintf('File does not exist: "%s"', $path));
         }
 
         return str_replace('\\', '/', realpath($path));