Change UBaseType_t to BaseType_t for a boolean variable (#1072)

tasks.c

diff --git a/tasks.c b/tasks.c
index db158f6..a049d64 100644
--- a/tasks.c
+++ b/tasks.c
@@ -3895,9 +3895,9 @@
     static TickType_t prvGetExpectedIdleTime( void )
     {
         TickType_t xReturn;
-        UBaseType_t uxHigherPriorityReadyTasks = pdFALSE;
+        BaseType_t xHigherPriorityReadyTasks = pdFALSE;
 
-        /* uxHigherPriorityReadyTasks takes care of the case where
+        /* xHigherPriorityReadyTasks takes care of the case where
          * configUSE_PREEMPTION is 0, so there may be tasks above the idle priority
          * task that are in the Ready state, even though the idle task is
          * running. */
@@ -3905,7 +3905,7 @@
         {
             if( uxTopReadyPriority > tskIDLE_PRIORITY )
             {
-                uxHigherPriorityReadyTasks = pdTRUE;
+                xHigherPriorityReadyTasks = pdTRUE;
             }
         }
         #else
@@ -3919,7 +3919,7 @@
              * care of the case where the co-operative scheduler is in use. */
             if( uxTopReadyPriority > uxLeastSignificantBit )
             {
-                uxHigherPriorityReadyTasks = pdTRUE;
+                xHigherPriorityReadyTasks = pdTRUE;
             }
         }
         #endif /* if ( configUSE_PORT_OPTIMISED_TASK_SELECTION == 0 ) */
@@ -3935,7 +3935,7 @@
              * processed. */
             xReturn = 0;
         }
-        else if( uxHigherPriorityReadyTasks != pdFALSE )
+        else if( xHigherPriorityReadyTasks != pdFALSE )
         {
             /* There are tasks in the Ready state that have a priority above the
              * idle priority.  This path can only be reached if