Add a test for rust-lang#2496

Author: YaLTeR

tests/source/issue-2496.rs

@@ -0,0 +1,16 @@
+// rustfmt-indent_style: Visual
+fn main() {
+    match option {
+        None => some_function(first_reasonably_long_argument,
+                              second_reasonably_long_argument),
+    }
+}
+
+fn main() {
+    match option {
+        None => {
+            some_function(first_reasonably_long_argument,
+                          second_reasonably_long_argument)
+        }
+    }
+}

tests/target/issue-2496.rs

@@ -0,0 +1,14 @@
+// rustfmt-indent_style: Visual
+fn main() {
+    match option {
+        None => some_function(first_reasonably_long_argument,
+                              second_reasonably_long_argument),
+    }
+}
+
+fn main() {
+    match option {
+        None => some_function(first_reasonably_long_argument,
+                              second_reasonably_long_argument),
+    }
+}