Merge pull request #1752 from nmullane/fix1751-missing-null-pointer-c…

…heck-in-get-release-addresses

Fix #1751, Add null pointer check to table GetAddresses and ReleaseAddresses

modules/tbl/fsw/src/cfe_tbl_api.c

@@ -1068,7 +1068,7 @@ CFE_Status_t CFE_TBL_GetAddresses(void **TblPtrs[], uint16 NumTables, const CFE_
     int32          Status;
     CFE_ES_AppId_t ThisAppId;
 
-    if (TblPtrs == NULL)
+    if (TblPtrs == NULL || TblHandles == NULL)
     {
         return CFE_TBL_BAD_ARGUMENT;
     }
@@ -1120,6 +1120,11 @@ CFE_Status_t CFE_TBL_ReleaseAddresses(uint16 NumTables, const CFE_TBL_Handle_t T
     CFE_Status_t Status = CFE_SUCCESS;
     uint16       i;
 
+    if (TblHandles == NULL)
+    {
+        return CFE_TBL_BAD_ARGUMENT;
+    }
+
     for (i = 0; i < NumTables; i++)
     {
         /* Continue to get the return status until one returns something other than CFE_SUCCESS */