efi_loader: Uart device path missing break

In the devicepath node to text conversion for Uart nodes a break statement
is missing.

Indicated by Coverity Scan CID 330038
Fixes: 62df6e9c9994 ("efi_loader: Uart device path")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/lib/efi_loader/efi_device_path_to_text.c b/lib/efi_loader/efi_device_path_to_text.c
index 43554cd..675e80b 100644
--- a/lib/efi_loader/efi_device_path_to_text.c
+++ b/lib/efi_loader/efi_device_path_to_text.c
@@ -126,8 +126,10 @@
 		switch (uart->stop_bits) {
 		case 2:
 			s += sprintf(s, "1.5)");
+			break;
 		default:
 			s += sprintf(s, "%d)", uart->stop_bits);
+			break;
 		}
 		break;
 	}