opt r+ does not see labels, creating incorrect code

[ehn-pkalinowski]

example:

	org $2000
	mva #4 $80
@
	mva #4 $81
	lda $D20A
	dec $80
	bne @-

it gets compiled to

     4 FFFF> 2000-200C> A9 04 + 	mva #4 $80
     5 				@
     6 2004 85 81			mva #4 $81
     7 2006 AD 0A D2			lda $D20A
     8 2009 C6 80			dec $80
     9 200B D0 F7			bne @-

It looks OK in a LST file, but in fact bne jumps to the sta instruction, so when the loop ends $81 contains a random value.

[ehn-pkalinowski]

the proposed solution - do not optimize when there is a label between pseudo commands.

[pkali]

Just spotted such an example:

812 7280 D0 04 A9 01 85 88	    sne:mva #1 fs  ; finish it     
813 7286 85 A9		             mva #1 Erase```
   
   mads assumes A is #1 in the second line, which is not really correct...

[tebe6502]

issue #10 fixed