ShadowMenu: reformat string concatenation

Author: ctrueden

src/main/java/org/scijava/menu/ShadowMenu.java

@@ -548,12 +548,14 @@ else if (existingChild != null) {
 				final ModuleInfo childInfo = existingChild.getModuleInfo();
 				if (childInfo != null && info.getPriority() == childInfo.getPriority())
 				{
-					log.warn("ShadowMenu: menu item already exists:\n\texisting: " +
-						childInfo + "\n\t ignored: " + info);
+					log.warn("ShadowMenu: menu item already exists:\n" + //
+						"\texisting: " + childInfo + "\n" + //
+						"\t ignored: " + info);
 				}
 				else {
 					log.debug("ShadowMenu: higher-priority menu item already exists:\n" +
-						"\texisting: " + childInfo + "\n\t ignored: " + info);
+						"\texisting: " + childInfo + "\n" + //
+						"\t ignored: " + info);
 				}
 			}
 		}