[ci] Fix naming

Author: hazendaz

src/main/java/org/apache/ibatis/jdbc/AbstractSQL.java

@@ -395,20 +395,20 @@ public String toString() {
   }
 
   private static class SafeAppendable {
-    private final Appendable a;
+    private final Appendable appendable;
     private boolean empty = true;
 
     public SafeAppendable(Appendable a) {
       super();
-      this.a = a;
+      this.appendable = a;
     }
 
     public SafeAppendable append(CharSequence s) {
       try {
         if (empty && s.length() > 0) {
           empty = false;
         }
-        a.append(s);
+        appendable.append(s);
       } catch (IOException e) {
         throw new RuntimeException(e);
       }

src/main/java/org/apache/ibatis/logging/LogFactory.java

@@ -43,8 +43,8 @@ private LogFactory() {
     // disable construction
   }
 
-  public static Log getLog(Class<?> aClass) {
-    return getLog(aClass.getName());
+  public static Log getLog(Class<?> clazz) {
+    return getLog(clazz.getName());
   }
 
   public static Log getLog(String logger) {