fix style

Author: Davies Liu

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/decimalFunctions.scala

@@ -39,7 +39,7 @@ case class UnscaledValue(child: Expression) extends UnaryExpression {
 
   override def genCode(ctx: CodeGenContext, ev: EvaluatedExpression): Code = {
     val eval = child.gen(ctx)
-    eval.code +s"""
+    eval.code + s"""
       boolean ${ev.nullTerm} = ${eval.nullTerm};
       long ${ev.primitiveTerm} = ${ev.nullTerm} ? -1 : ${eval.primitiveTerm}.toUnscaledLong();
      """

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/literals.scala

@@ -105,7 +105,8 @@ case class Literal protected (value: Any, dataType: DataType) extends LeafExpres
         case dt: DecimalType =>
           s"""
             final boolean ${ev.nullTerm} = false;
-            ${ctx.primitiveType(dt)} ${ev.primitiveTerm} = new ${ctx.primitiveType(dt)}().set($value);
+            ${ctx.primitiveType(dt)} ${ev.primitiveTerm} =
+              new ${ctx.primitiveType(dt)}().set($value);
            """
         case dt: NumericType =>
           s"""

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/predicates.scala

@@ -276,7 +276,7 @@ case class EqualTo(left: Expression, right: Expression) extends BinaryComparison
     if (left.dataType != BinaryType) l == r
     else java.util.Arrays.equals(l.asInstanceOf[Array[Byte]], r.asInstanceOf[Array[Byte]])
   }
-  override def genCode(ctx: CodeGenContext, ev: EvaluatedExpression) = {
+  override def genCode(ctx: CodeGenContext, ev: EvaluatedExpression): Code = {
     evaluate(ctx, ev, ctx.equalFunc(left.dataType))
   }
 }