[ci] Combine more complex 'if' statement per pmd/sonar

Author: hazendaz

src/main/java/org/apache/ibatis/builder/xml/XMLMapperBuilder.java

@@ -393,14 +393,11 @@ private ResultMapping buildResultMappingFromContext(XNode context, Class<?> resu
   }
 
   private String processNestedResultMappings(XNode context, List<ResultMapping> resultMappings, Class<?> enclosingType) {
-    if ("association".equals(context.getName())
-        || "collection".equals(context.getName())
-        || "case".equals(context.getName())) {
-      if (context.getStringAttribute("select") == null) {
-        validateCollection(context, enclosingType);
-        ResultMap resultMap = resultMapElement(context, resultMappings, enclosingType);
-        return resultMap.getId();
-      }
+    if (("association".equals(context.getName()) || "collection".equals(context.getName())
+        || "case".equals(context.getName())) && context.getStringAttribute("select") == null) {
+      validateCollection(context, enclosingType);
+      ResultMap resultMap = resultMapElement(context, resultMappings, enclosingType);
+      return resultMap.getId();
     }
     return null;
   }