Remove spurious increment of problemid in subproblem.h

subproblem.h

@@ -36,7 +36,6 @@ struct Subproblem {
 	    3*sizeof(unsigned int));
 	memmove(desc+3+(3*WORDS+3)*sizeof(unsigned int), &dpfreq,
 	    sizeof(unsigned int));
-	++problemid;
     }
 
     // Initilize the Subproblem from the binary description, *without*