initialize send and receive pointers to 0

Author: totalspectrum

Test/Expect/stest255.p2asm

@@ -49,7 +49,7 @@ builtin_longfill_
 __methods__
 	long	@__methodtable__
 __recvreg
-	long	1024
+	long	0
 objptr
 	long	@objmem
 result1

backends/asm/outasm.c

@@ -1312,13 +1312,13 @@ CompileSymbolForFunc(IRList *irl, Symbol *sym, Function *func, AST *ast)
                 if (off == -1) {
                     // this is a special internal COG variable
                     if (!sendreg) {
-                        sendreg = GetOneGlobal(REG_REG, "__sendreg", P2_HUB_BASE);
+                        sendreg = GetOneGlobal(REG_REG, "__sendreg", 0);
                     }
                     return sendreg;
                 } else if (off == -2) {
                     // this is a special internal COG variable
                     if (!recvreg) {
-                        recvreg = GetOneGlobal(REG_REG, "__recvreg", P2_HUB_BASE);
+                        recvreg = GetOneGlobal(REG_REG, "__recvreg", 0);
                     }
                     return recvreg;
                 } else if (off == -3) {