Bad bad bug!

Newly added strip->scale was never initialized 1.0f on adding, causing
divide by zero in NLA/Action UI.

Bug since september or so... is nobody using NLA? :)

source/blender/blenkernel/intern/action.c

@@ -441,6 +441,8 @@ static float get_actionstrip_frame(bActionStrip *strip, float cframe, int invert
 	float length, actlength, repeat, scale;
 	
 	repeat = (strip->flag & ACTSTRIP_USESTRIDE) ? (1.0f) : (strip->repeat);
+	if(strip->scale == 0.0f) strip->scale= 1.0f;
+	
 	scale = abs(strip->scale); /* scale must be positive (for now) */
 	
 	actlength = strip->actend-strip->actstart;

source/blender/src/editnla.c

@@ -581,7 +581,7 @@ static void add_nla_block(short event)
 		/* simple prevention of zero strips */
 	if(strip->start>strip->end-2) 
 		strip->end= strip->start+100;
-	strip->repeat = 1.0;
+	strip->repeat = strip->scale= 1.0f;
 	
 	strip->flag = ACTSTRIP_SELECT|ACTSTRIP_LOCK_ACTION;
 	
@@ -620,6 +620,7 @@ static void add_nla_block_by_name(char name[32], Object *ob, short hold, short a
 	
 	/* Initialize the new action block */
 	strip = MEM_callocN(sizeof(bActionStrip), "bActionStrip");
+	strip->scale= 1.0f;
 	
 	deselect_nlachannel_keys(0);