Description:fix code warnings

issuesno:https://gitee.com/openharmony/graphic_ui/issues/I5GT4I?from=project-issue
Feature or Bugfix: Feature
Binary Source:No
Signed-off-by: Nshiqichang <shiqichang@huawei.com>
Change-Id: I7ab64ad8ca43e5e91940599bedfc741f1a1e280d

Change-Id: If68dbb48a36fe3914a7b896655a782bb7c2e00ad

frameworks/draw/draw_arc.cpp

@@ -169,7 +169,6 @@ void DrawArc::DrawCircleNoEndpoint(BufferInfo& gfxDstBuffer,
             }
             if (y_ <= -inRadius_) {
                 lineEnd_ = -1;
-                xi = -1;
                 break;
             }
             if (currentSqr < inRadiusSqr_) {

frameworks/imgdecode/image_load.cpp

@@ -140,11 +140,9 @@ bool ImageLoad::Unzip24Image(uint8_t* imageBuffer, uint32_t size, ImageInfo& ima
             *dest = value | BITMAP_ALPHA_MASK;
             dest++;
         } else {
-            value = 0;
             value = ((*source)) + (*(source + BITMAP_MID_BIT) << MOVE_LOW) + (*(source + BITMAP_LOW_BIT) << MOVE_HIGH);
             source = source + BITMAP_ZIP_LEN;
 
-            count = 0;
             count = ((*source)) + (*(source + BITMAP_MID_BIT) << MOVE_LOW) + (*(source + BITMAP_LOW_BIT) << MOVE_HIGH);
             source = source + BITMAP_ZIP_LEN;