fix an error

Pcie40Applications/regconfig.cpp

@@ -347,7 +347,7 @@ int main(int argc, char** argv){
   // open pcie40 device driver for current process
   ecs_open( dev_slot , SLC_BAR );
   int result = -1;
-
+  pcie40reg_t pcie40;
 
   if(PCIE40_REG && READ_ONLY){
     result = ecs_read( dev_slot , SLC_BAR , addr);