[csharp] Fixed errors.

spine-csharp/src/PathConstraint.cs

@@ -91,8 +91,8 @@ namespace Spine {
 				if (scale) lengths = this.lengths.Resize(boneCount);
 				for (int i = 0, n = spacesCount - 1; i < n;) {
 					Bone bone = bonesItems[i];
-					float setupLength = bone.data.length
-					if (setupLength == 0) setupLength = 0.000000001;
+					float setupLength = bone.data.length;
+					if (setupLength == 0) setupLength = 0.000000001f;
 					float x = setupLength * bone.a, y = setupLength * bone.c;
 					float length = (float)Math.Sqrt(x * x + y * y);
 					if (scale) lengths.Items[i] = setupLength;