Minor HAL patches

Marlin/src/HAL/HAL_LPC1768/usb_serial.cpp

+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
 #ifdef TARGET_LPC1768
+
 #include "../../inc/MarlinConfigPre.h"
 
 #if ENABLED(EMERGENCY_PARSER)
-  #include "../../feature/emergency_parser.h"
-  EmergencyParser::State emergency_state;
-  bool CDC_RecvCallback(const char buffer) {
-    emergency_parser.update(emergency_state, buffer);
-    return true;
-  }
-#endif // ENABLED(EMERGENCY_PARSER)
 
+#include "../../feature/emergency_parser.h"
+EmergencyParser::State emergency_state;
+bool CDC_RecvCallback(const char buffer) {
+  emergency_parser.update(emergency_state, buffer);
+  return true;
+}
+
+#endif // EMERGENCY_PARSER
 #endif // TARGET_LPC1768

Marlin/src/HAL/HAL_STM32_F4_F7/eeprom_emul.cpp

   pEraseInit.NbSectors = 1;
   pEraseInit.VoltageRange = VOLTAGE_RANGE;
 
+  HAL_StatusTypeDef FlashStatus; // = HAL_OK
+
   /* Check for invalid header states and repair if necessary */
   uint32_t SectorError;
   switch (PageStatus0) {
           }
         }
         /* Mark Page0 as valid */
-        HAL_StatusTypeDef FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
+        FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
         /* If program operation was failed, a Flash error code is returned */
         if (FlashStatus != HAL_OK) return FlashStatus;
         pEraseInit.Sector = PAGE1_ID;