remove extra semicolons

The fuzz builder fails on this:
 error: empty expression statement has no effect; remove unnecessary ';' to silence this warning [-Werror,-Wextra-semi-stmt]

Bug: oss-fuzz:12147
Change-Id: I239371c2e303d2f9ed03bd563c4d4915219d5bb7
Reviewed-on: https://skia-review.googlesource.com/c/180047
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
diff --git a/src/gpu/ops/GrQuadPerEdgeAA.cpp b/src/gpu/ops/GrQuadPerEdgeAA.cpp
index 7d00101..8fa067f 100644
--- a/src/gpu/ops/GrQuadPerEdgeAA.cpp
+++ b/src/gpu/ops/GrQuadPerEdgeAA.cpp
@@ -241,7 +241,7 @@
 
         // Compute t in homogeneous space from s using similar triangles so that we can produce
         // homogeneous outset vertices for perspective-correct interpolation.
-        Sk4f s = get_projected_interpolant(len, outset, &maxProjectedCoverage);;
+        Sk4f s = get_projected_interpolant(len, outset, &maxProjectedCoverage);
         Sk4f sOpW = s * opW;
         Sk4f t = sOpW / (sOpW + (1.f - s) * (*w));
         // mask is used to make the t values be 1 when the left/right side is not antialiased.
@@ -283,7 +283,7 @@
         Sk2f vy = SkNx_shuffle<1, 3>(y2d) - SkNx_shuffle<0, 2>(y2d);
         Sk4f len = SkNx_shuffle<0, 0, 1, 1>(SkNx_fma(vx, vx, vy * vy).sqrt());
 
-        Sk4f s = get_projected_interpolant(len, outset, &maxProjectedCoverage);;
+        Sk4f s = get_projected_interpolant(len, outset, &maxProjectedCoverage);
         Sk4f sOpW = s * opW;
         Sk4f t = sOpW / (sOpW + (1.f - s) * (*w));