Add valid() to recovery.info

Marlin/src/feature/powerloss.h

@@ -106,6 +106,8 @@ typedef struct {
 
   uint8_t valid_foot;
 
+  bool valid() { return valid_head && valid_head == valid_foot; }
+
 } job_recovery_info_t;
 
 class PrintJobRecovery {
@@ -164,7 +166,7 @@ class PrintJobRecovery {
     }
   #endif
 
-  static inline bool valid() { return info.valid_head && info.valid_head == info.valid_foot; }
+  static inline bool valid() { return info.valid(); }
 
   #if ENABLED(DEBUG_POWER_LOSS_RECOVERY)
     static void debug(PGM_P const prefix);

Marlin/src/gcode/feature/powerloss/M1000.cpp

@@ -41,7 +41,7 @@ inline void plr_error(PGM_P const prefix) {
   #if ENABLED(DEBUG_POWER_LOSS_RECOVERY)
     DEBUG_ECHO_START();
     serialprintPGM(prefix);
-    DEBUG_ECHOLNPGM(" Power-Loss Recovery Data");
+    DEBUG_ECHOLNPGM(" Job Recovery Data");
   #else
     UNUSED(prefix);
   #endif