Polish formatting in Groovy scripts

spring-context/src/test/resources/org/springframework/scripting/groovy/Calculator.groovy

@@ -7,4 +7,5 @@ class GroovyCalculator implements Calculator {
 	int add(int x, int y) {
 		return x + y;
 	}
+
 }

spring-context/src/test/resources/org/springframework/scripting/groovy/CallCounter.groovy

@@ -21,4 +21,5 @@ class GroovyCallCounter implements CallCounter {
 	void destroy() {
 		count = -200;
 	}
+
 }

spring-context/src/test/resources/org/springframework/scripting/groovy/DelegatingCalculator.groovy

@@ -16,4 +16,5 @@ class DelegatingCalculator implements Calculator {
 
 		return delegate.add(x,y)
 	}
+
 }