account for floated inputs in the .navbar-form

docs/assets/css/bootstrap.css

@@ -2429,6 +2429,14 @@ button.btn.small, input[type="submit"].btn.small {
 }
 .navbar-form {
   margin-bottom: 0;
+  *zoom: 1;
+}
+.navbar-form:before, .navbar-form:after {
+  display: table;
+  content: "";
+}
+.navbar-form:after {
+  clear: both;
 }
 .navbar-form input, .navbar-form select {
   display: inline-block;

less/navbar.less

@@ -88,6 +88,7 @@
 // Navbar forms
 .navbar-form {
   margin-bottom: 0; // remove default bottom margin
+  .clearfix();
   input,
   select {
     display: inline-block;