- NSURL+OCVaultTools: handle case where OCVault.storageRootURL returns nil (f.ex. if no File Provider is available or included), fixing a crash on macOS when dragging a file into the app.

Author: felix-schwarz

ownCloudAppFramework/Foundation Extensions/NSURL+OCVaultTools.m

@@ -31,6 +31,11 @@ - (BOOL)isLocatedWithinVaultStorage
 	NSString *vaultRootPath = OCVault.storageRootURL.path;
 	NSString *path = self.path;
 
+	if (vaultRootPath == nil)
+	{
+		return (NO);
+	}
+
 	if (![vaultRootPath hasSuffix:@"/"])
 	{
 		vaultRootPath = [vaultRootPath stringByAppendingString:@"/"];