Revert unintentional change in AnnotationUtils

Author: sbrannen

spring-core/src/main/java/org/springframework/core/annotation/AnnotationUtils.java

@@ -364,11 +364,12 @@ public static <A extends Annotation> A findAnnotation(Method method, Class<A> an
 					result = searchOnInterfaces(method, annotationType, clazz.getInterfaces());
 				}
 			}
-		}
 
-		if (result != null) {
-			findAnnotationCache.put(cacheKey, result);
+			if (result != null) {
+				findAnnotationCache.put(cacheKey, result);
+			}
 		}
+
 		return result;
 	}