B05002 can open bag then cannot loot it

> Trying to loot a bag on the floor while wielding a cursed
> quarterstaff: "You carefully open the bag... You have no free hand."
> Shouldn't I notice that I have no free hand before even trying?

add freehand() check to able_to_loot()

doc/fixes34.2

@@ -112,6 +112,7 @@ stone-to-flesh of spot with multiple statues can animate more than one
 use of stethoscope now deliberately impacted when hero is engulfed by whirly 
 	monster but fixed so it can sometimes work on your steed there too
 typos fixed in data.base
+add freehand() check to able_to_loot()
 
 
 Platform- and/or Interface-Specific Fixes

src/pickup.c

@@ -1437,6 +1437,10 @@ boolean looting;	/* loot vs tip */
 	} else if (nolimbs(youmonst.data)) {
 		pline("Without limbs, you cannot %s anything.", verb);
 		return FALSE;
+	} else if (!freehand()) {
+		pline("Without a free %s, you cannot loot anything.",
+			body_part(HAND));
+		return FALSE;
 	}
 	return TRUE;
 }