FileConfigStore: cleanup on rename problem

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/app/src/main/java/com/wireguard/android/configStore/FileConfigStore.java b/app/src/main/java/com/wireguard/android/configStore/FileConfigStore.java
index 4bc7a17e..f5cd01f0 100644
--- a/app/src/main/java/com/wireguard/android/configStore/FileConfigStore.java
+++ b/app/src/main/java/com/wireguard/android/configStore/FileConfigStore.java
@@ -76,8 +76,10 @@ public final class FileConfigStore implements ConfigStore {
         final File replacementFile = fileFor(replacement);
         if (!replacementFile.createNewFile())
             throw new IOException("Configuration for " + replacement + " already exists");
-        if (!file.renameTo(replacementFile))
+        if (!file.renameTo(replacementFile)) {
+            replacementFile.delete();
             throw new IOException("Cannot rename configuration file " + file.getName());
+        }
     }
 
     @Override