fix -vet issues

.github/workflows/tests.yml

@@ -0,0 +1,23 @@
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    types:
+      - opened
+      - synchronize
+
+jobs:
+  tests:
+    name: tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - uses: laytan/setup-odin@v2
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Test
+        shell: bash
+        run: odin test anima -vet

anima/anima.odin

@@ -1,6 +1,5 @@
 package anima
 
-import "core:fmt"
 import "core:strconv"
 import "core:strings"
 
@@ -22,19 +21,17 @@ new_grid :: proc(
 	top: uint = 0,
 	border: uint = 0,
 ) -> Grid {
-	return(
-		 {
-			frame_width,
-			frame_height,
-			image_width,
-			image_height,
-			left,
-			top,
-			image_width / frame_width,
-			image_height / frame_height,
-			border,
-		} \
-	)
+	return {
+		frame_width,
+		frame_height,
+		image_width,
+		image_height,
+		left,
+		top,
+		image_width / frame_width,
+		image_height / frame_height,
+		border,
+	}
 }
 
 Interval :: struct {
@@ -99,11 +96,6 @@ grid_frames :: proc(grid: ^Grid, intervals: ..IntervalT) -> []FrameRect {
 		column := parse_interval(intervals[i])
 		row := parse_interval(intervals[i + 1])
 
-		c_start := int(column.from)
-		c_end := int(column.to)
-		r_start := int(row.from)
-		r_end := int(row.to)
-
 		cond := proc(index: int, interval: Interval) -> bool {
 			if interval.forward {
 				return index <= int(interval.to)