Fix conditional test Rockwell/WDC opcodes

Test comments indicated that having rkwl_wdc_op set to > 1 means
no test, but there was conditional that was just checking
that the value was not 0 and thereby causing those opcodes
to be tests when this value was set to > 1

65C02_extended_opcodes_test.a65c

@@ -1867,7 +1867,7 @@ tbt2
         trap_ne     ;sp push/pop mismatch
         next_test    
 
-    if rkwl_wdc_op
+    if rkwl_wdc_op = 1
 ; testing RMB, SMB - zp
 rmbt    macro       ;\1 = bitnum
         lda #$ff
@@ -2751,4 +2751,4 @@ ji_px   nop             ;low address byte matched with ji_ret
     endif
 
         end start
-            
+