Throw illegalargumentexception instead of nullpointerexception for builder errors

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/config/Config.java b/app/src/main/java/com/wireguard/config/Config.java
index 6c9d7ba3..7b9bcab3 100644
--- a/app/src/main/java/com/wireguard/config/Config.java
+++ b/app/src/main/java/com/wireguard/config/Config.java
@@ -30,7 +30,9 @@ public final class Config {
     private final List<Peer> peers;
 
     private Config(final Builder builder) {
-        interfaze = Objects.requireNonNull(builder.interfaze, "An [Interface] section is required");
+        if (builder.interfaze == null)
+            throw new IllegalArgumentException("An [Interface] section is required");
+        interfaze = builder.interfaze;
         // Defensively copy to ensure immutability even if the Builder is reused.
         peers = Collections.unmodifiableList(new ArrayList<>(builder.peers));
     }