Simplify setting to be a single line instead of 3

Author: jasmith-hs

src/main/java/com/hubspot/jinjava/interpret/JinjavaInterpreter.java

@@ -498,9 +498,7 @@ private String render(Node root, boolean processExtendRoots, long renderLimit) {
             basePath = Optional.of(currentPath);
           }
         }
-        if (context.getDeferredTokens().size() > numDeferredTokensBefore) {
-          preserveBlocks = true;
-        }
+        preserveBlocks = (context.getDeferredTokens().size() > numDeferredTokensBefore);
       }
 
       int numDeferredTokensBefore = context.getDeferredTokens().size();