fix -Wshadow related warnings

fixes all -Wshadow related warnings (on gcc). this would allow us to use
`-Wshadow` in github workflow (https://github.com/nsxiv/nsxiv/pull/195).

i've thought about adding `-Wshadow` to our Makefile as well, but
decided against it to keep the Makefile CFLAGS barebore/minimal.

3 files changed, 10 insertions, 11 deletions

diff --git a/commands.c b/commands.c
index 64f609d..423637b 100644
--- a/commands.c
+++ b/commands.c
@@ -328,7 +328,7 @@ bool ci_scroll_to_edge(arg_t dir)
 	return img_pan_edge(&img, dir);
 }
 
-bool ci_drag(arg_t mode)
+bool ci_drag(arg_t drag_mode)
 {
 	int x, y, ox, oy;
 	float px, py;
@@ -337,13 +337,13 @@ bool ci_drag(arg_t mode)
 	if ((int)(img.w * img.zoom) <= win.w && (int)(img.h * img.zoom) <= win.h)
 		return false;
 
-	win_set_cursor(&win, mode == DRAG_ABSOLUTE ? CURSOR_DRAG_ABSOLUTE : CURSOR_DRAG_RELATIVE);
+	win_set_cursor(&win, drag_mode == DRAG_ABSOLUTE ? CURSOR_DRAG_ABSOLUTE : CURSOR_DRAG_RELATIVE);
 	win_cursor_pos(&win, &x, &y);
 	ox = x;
 	oy = y;
 
 	while (true) {
-		if (mode == DRAG_ABSOLUTE) {
+		if (drag_mode == DRAG_ABSOLUTE) {
 			px = MIN(MAX(0.0, x - win.w*0.1), win.w*0.8) / (win.w*0.8)
 			   * (win.w - img.w * img.zoom);
 			py = MIN(MAX(0.0, y - win.h*0.1), win.h*0.8) / (win.h*0.8)
diff --git a/image.c b/image.c
index f8c6208..03c1f00 100644
--- a/image.c
+++ b/image.c
@@ -559,7 +559,6 @@ void img_render(img_t *img)
 	int sx, sy, sw, sh;
 	int dx, dy, dw, dh;
 	Imlib_Image bg;
-	XColor c;
 
 	win = img->win;
 	img_fit(img);
@@ -627,7 +626,7 @@ void img_render(img_t *img)
 			}
 			imlib_image_put_back_data(data);
 		} else {
-			c = win->win_bg;
+			XColor c = win->win_bg;
 			imlib_context_set_color(c.red >> 8, c.green >> 8, c.blue >> 8, 0xFF);
 			imlib_image_fill_rectangle(0, 0, dw, dh);
 		}
diff --git a/main.c b/main.c
index 34c0254..f8c727f 100644
--- a/main.c
+++ b/main.c
@@ -605,19 +605,19 @@ end:
 	return true;
 }
 
-static bool process_bindings(const keymap_t *keys, unsigned int len, KeySym ksym_or_button,
+static bool process_bindings(const keymap_t *bindings, unsigned int len, KeySym ksym_or_button,
                              unsigned int state, unsigned int implicit_mod)
 {
 	unsigned int i;
 	bool dirty = false;
 
 	for (i = 0; i < len; i++) {
-		if (keys[i].ksym_or_button == ksym_or_button &&
-		    MODMASK(keys[i].mask | implicit_mod) == MODMASK(state) &&
-		    keys[i].cmd.func &&
-		    (keys[i].cmd.mode == MODE_ALL || keys[i].cmd.mode == mode))
+		if (bindings[i].ksym_or_button == ksym_or_button &&
+		    MODMASK(bindings[i].mask | implicit_mod) == MODMASK(state) &&
+		    bindings[i].cmd.func &&
+		    (bindings[i].cmd.mode == MODE_ALL || bindings[i].cmd.mode == mode))
 		{
-			if (keys[i].cmd.func(keys[i].arg))
+			if (bindings[i].cmd.func(bindings[i].arg))
 				dirty = true;
 		}
 	}