[HAL][RTC] Expand the cast of 'RTC_CR_BYPSHAD' to 32 bits when writing to the CR register in HAL_RTCEx_DisableBypassShadow() to avoid overwriting its upper bits

Src/stm32f4xx_hal_rtc_ex.c

diff --git a/Src/stm32f4xx_hal_rtc_ex.c b/Src/stm32f4xx_hal_rtc_ex.c
index f6aec5e..fdcc5b6 100644
--- a/Src/stm32f4xx_hal_rtc_ex.c
+++ b/Src/stm32f4xx_hal_rtc_ex.c
@@ -1745,7 +1745,7 @@
   __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
 
   /* Set the BYPSHAD bit */
-  hrtc->Instance->CR |= (uint8_t)RTC_CR_BYPSHAD;
+  hrtc->Instance->CR |= (uint32_t)RTC_CR_BYPSHAD;
 
   /* Enable the write protection for RTC registers */
   __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
@@ -1778,7 +1778,7 @@
   __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
 
   /* Reset the BYPSHAD bit */
-  hrtc->Instance->CR &= (uint8_t)~RTC_CR_BYPSHAD;
+  hrtc->Instance->CR &= (uint32_t)~RTC_CR_BYPSHAD;
 
   /* Enable the write protection for RTC registers */
   __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);