Fixes to compiler warnings in MSVC

firmware/lib/rollback_index.c

Index: firmware/lib/rollback_index.c
diff --git a/firmware/lib/rollback_index.c b/firmware/lib/rollback_index.c
index cb86e89e8d51cf7952a3adacc24acd03e40241d7..728087a781e90a2ae01c6ea5ade0bd9ca2422209 100644
--- a/firmware/lib/rollback_index.c
+++ b/firmware/lib/rollback_index.c
@@ -121,15 +121,15 @@ static uint32_t GetTPMRollbackIndices(int type) {
     RETURN_ON_FAILURE(TlclRead(FIRMWARE_VERSIONS_NV_INDEX,
                                (uint8_t*) &firmware_versions,
                                sizeof(firmware_versions)));
-    g_firmware_key_version = firmware_versions >> 16;
-    g_firmware_version = firmware_versions && 0xffff;
+    g_firmware_key_version = (uint16_t) (firmware_versions >> 16);
+    g_firmware_version = (uint16_t) (firmware_versions & 0xffff);
     break;
   case KERNEL_VERSIONS:
     RETURN_ON_FAILURE(TlclRead(KERNEL_VERSIONS_NV_INDEX,
                                (uint8_t*) &kernel_versions,
                                sizeof(kernel_versions)));
-    g_kernel_key_version = kernel_versions >> 16;
-    g_kernel_version = kernel_versions && 0xffff;
+    g_kernel_key_version = (uint16_t) (kernel_versions >> 16);
+    g_kernel_version = (uint16_t) (kernel_versions & 0xffff);
     break;
   }