Fix(enhanced-http): static analysis warning

Author: Akalanka47000

packages/enhanced_http/lib/utils.dart

@@ -1,13 +1,10 @@
 class Utils {
-  Map<String, String> mergeHeaders(
-          Map<String, String>? h1, Map<String, String>? h2,
-          [Map<String, String>? h3]) =>
-      {...?h1, ...?h2, ...?h3};
+  Map<String, String> mergeHeaders(Map<String, String>? h1, Map<String, String>? h2, [Map<String, String>? h3]) => {...?h1, ...?h2, ...?h3};
 
   bool isStream(Map<String, String>? headers, [String? responseType = "json"]) {
-    if ([headers?["Content-Type"], headers?["content-type"]]
-            .contains("multipart/form-data") ||
-        responseType == "stream") return true;
+    if ([headers?["Content-Type"], headers?["content-type"]].contains("multipart/form-data") || responseType == "stream") {
+      return true;
+    }
     return false;
   }
 }