Fix TimePicker panel style (#3793)

components/time-picker/style/index.less

@@ -85,6 +85,7 @@
     width: 56px;
     overflow: hidden;
     position: relative; // Fix chrome weird render bug
+    max-height: 144px;
 
     &:hover {
       overflow-y: auto;
@@ -99,13 +100,16 @@
       border-right: 0;
     }
 
+    &:only-child {
+      width: 100%;
+    }
+
     ul {
       list-style: none;
       box-sizing: border-box;
       margin: 0;
-      padding: 0;
+      padding: 0 0 120px 0;
       width: 100%;
-      max-height: 144px;
     }
 
     li {
@@ -122,12 +126,6 @@
       transition: background 0.3s ease;
     }
 
-    li:last-child:after {
-      content: '';
-      height: 120px;
-      display: block;
-    }
-
     li:hover {
       background: tint(@primary-color, 90%);
     }

package.json

@@ -65,7 +65,7 @@
     "rc-switch": "~1.4.2",
     "rc-table": "~5.0.0",
     "rc-tabs": "~7.0.5",
-    "rc-time-picker": "~2.2.0",
+    "rc-time-picker": "~2.2.1",
     "rc-tooltip": "~3.4.2",
     "rc-tree": "~1.4.0",
     "rc-tree-select": "~1.8.0",