mesa: use BITFIELD64_BIT() macro
diff --git a/src/mesa/program/program.c b/src/mesa/program/program.c
index cfdd0da..79034ab 100644
--- a/src/mesa/program/program.c
+++ b/src/mesa/program/program.c
@@ -811,7 +811,7 @@
       /* Connect color outputs of fprogA to color inputs of fprogB, via a
        * new temporary register.
        */
-      if ((progA->OutputsWritten & (1 << FRAG_RESULT_COLOR)) &&
+      if ((progA->OutputsWritten & BITFIELD64_BIT(FRAG_RESULT_COLOR)) &&
           (progB_inputsRead & FRAG_BIT_COL0)) {
          GLint tempReg = _mesa_find_free_register(usedTemps, MAX_PROGRAM_TEMPS,
                                                   firstTemp);
@@ -834,7 +834,7 @@
 
       /* compute combined program's InputsRead */
       inputsB = progB_inputsRead;
-      if (progA->OutputsWritten & (1 << FRAG_RESULT_COLOR)) {
+      if (progA->OutputsWritten & BITFIELD64_BIT(FRAG_RESULT_COLOR)) {
          inputsB &= ~(1 << FRAG_ATTRIB_COL0);
       }
       newProg->InputsRead = progA->InputsRead | inputsB;