Cleanup & typo in assignment

source/blender/blenlib/intern/convexhull2d.c

@@ -187,7 +187,7 @@ static int pointref_cmp_yx(const void *a_, const void *b_)
  * \param  points  An array of 2D points.
  * \param  n  The number of points in points.
  * \param  r_points  An array of the convex hull vertex indices (max is n).
- *         _must_ be allocated as ``n * 2`` becauise of how its used internally,
+ *         _must_ be allocated as ``n * 2`` because of how its used internally,
  *         even though the final result will be no more then \a n in size.
  * \returns the number of points in r_points.
  */

source/blender/blenlib/intern/polyfill2d.c

@@ -661,12 +661,12 @@ static PolyIndex *pf_ear_tip_find(
 
 static bool pf_ear_tip_check(PolyFill *pf, PolyIndex *pi_ear_tip)
 {
-	/* localize */
-	PolyIndex *pi_curr;
-	const float (*coords)[2] = pf->coords;
-
 #ifndef USE_KDTREE
 	const float *v1, *v2, *v3;
+#else
+	/* localize */
+	const float (*coords)[2] = pf->coords;
+	PolyIndex *pi_curr;
 #endif
 
 #if defined(USE_CONVEX_SKIP) && !defined(USE_KDTREE)
@@ -711,8 +711,6 @@ static bool pf_ear_tip_check(PolyFill *pf, PolyIndex *pi_ear_tip)
 			return false;
 		}
 	}
-	(void)pi_curr;
-	(void)coords;
 #else
 
 	v1 = coords[pi_ear_tip->prev->index];

source/blender/editors/interface/interface_handlers.c

@@ -1967,7 +1967,7 @@ static int ui_text_position_from_hidden(uiBut *but, int pos)
 
 static int ui_text_position_to_hidden(uiBut *but, int pos)
 {
-	const char *butstr = butstr = (but->editstr) ? but->editstr : but->drawstr;
+	const char *butstr = (but->editstr) ? but->editstr : but->drawstr;
 	return BLI_strnlen_utf8(butstr, pos);
 }
 

source/blender/windowmanager/intern/wm_event_system.c

@@ -1557,7 +1557,7 @@ static int wm_handler_operator_call(bContext *C, ListBase *handlers, wmEventHand
 		wmOperatorType *ot = op->type;
 
 		if (!wm_operator_check_locked_interface(C, ot)) {
-			/* Interface is locked and pperator is not allowed to run,
+			/* Interface is locked and operator is not allowed to run,
 			 * nothing to do in this case.
 			 */
 		}

source/blender/windowmanager/intern/wm_keymap.c

@@ -1426,7 +1426,7 @@ wmKeyMap *WM_keymap_guess_opname(const bContext *C, const char *opname)
 	 *     BOID_OT
 	 *     BUTTONS_OT
 	 *     CONSTRAINT_OT
-	 *     DPAINT_OT
+	 *     PAINT_OT
 	 *     ED_OT
 	 *     FLUID_OT
 	 *     TEXTURE_OT