Shorter if/else for simple statement

Author: blootsvoets

src/main/java/org/radarcns/data/FileCache.java

@@ -144,11 +144,7 @@ private static void copy(Path source, OutputStream sink, boolean gzip) throws IO
     }
 
     private static InputStream inputStream(InputStream in, boolean gzip) throws IOException {
-        if (gzip) {
-            return new GZIPInputStream(in);
-        } else {
-            return in;
-        }
+        return gzip ? new GZIPInputStream(in) : in;
     }
 
     /**