fix checkstyle issues

spring-r2dbc/src/main/java/org/springframework/r2dbc/core/BeanPropertyRowMapper.java

@@ -296,10 +296,10 @@ protected String underscoreName(String name) {
 	 * case of an {@code OutParameters}.
 	 * <p>Utilizes public setters and derives meta-data from the
 	 * concrete type.
-	 * @see RowMetadata
-	 * @see OutParametersMetadata
 	 * @throws UnsupportedOperationException in case the concrete type
 	 * is neither {@code Row} nor {@code OutParameters}
+	 * @see RowMetadata
+	 * @see OutParametersMetadata
 	 */
 	@Override
 	public T apply(Readable readable) {
@@ -431,7 +431,7 @@ protected Object getItemValue(Readable readable, int itemIndex, Class<?> paramTy
 		try {
 			return readable.get(itemIndex, paramType);
 		}
-		catch (Throwable e) {
+		catch (Throwable ex) {
 			return readable.get(itemIndex);
 		}
 	}

spring-r2dbc/src/test/java/org/springframework/r2dbc/core/BeanPropertyRowMapperTests.java

@@ -16,8 +16,6 @@
 
 package org.springframework.r2dbc.core;
 
-import io.r2dbc.spi.OutParameters;
-import io.r2dbc.spi.OutParametersMetadata;
 import io.r2dbc.spi.Readable;
 import io.r2dbc.spi.test.MockColumnMetadata;
 import io.r2dbc.spi.test.MockOutParameters;

spring-r2dbc/src/test/java/org/springframework/r2dbc/core/DataClassRowMapperTests.java

@@ -194,4 +194,4 @@ private static MockRow buildMockRow(String birthDateColumnName, boolean balanceO
 		return builder.build();
 	}
 
-}
+}