Cleanup: add line break at the end of benchmark files

Author: fzhinkin

benchmarks/build.gradle.kts

@@ -47,4 +47,4 @@ benchmark {
         }
         register("native")
     }
-}
+}

benchmarks/src/commonMain/kotlin/BufferOps.kt

@@ -379,4 +379,4 @@ open class BufferReadNewByteArray: BufferRWBenchmarkBase() {
         buffer.write(inputArray)
         return buffer.readByteArray(size.toLong())
     }
-}
+}

benchmarks/src/commonMain/kotlin/Constants.kt

@@ -5,4 +5,4 @@
 
 package kotlinx.io.benchmarks
 
-const val SEGMENT_SIZE_IN_BYTES: Int = 8192
+const val SEGMENT_SIZE_IN_BYTES: Int = 8192

benchmarks/src/commonMain/kotlin/PeekBenchmark.kt

@@ -49,4 +49,4 @@ open class PeekIntBenchmark : PeekBenchmark() {
 open class PeekLongBenchmark : PeekBenchmark() {
     @Benchmark
     fun benchmark() = peek().readLong()
-}
+}

benchmarks/src/commonMain/kotlin/SegmentPoolBenchmark.kt

@@ -19,4 +19,4 @@ open class SegmentPoolBenchmark {
         // clear will recycle an old segment
         buffer.clear()
     }
-}
+}

benchmarks/src/jvmMain/kotlin/ByteBufferBenchmarks.kt

@@ -33,4 +33,4 @@ open class ByteBufferReadWrite: BufferRWBenchmarkBase() {
         }
         return outputBuffer
     }
-}
+}

benchmarks/src/jvmMain/kotlin/SegmentPoolBenchmarkMT.kt

@@ -32,4 +32,4 @@ open class SegmentPoolBenchmarkMT {
     @Group("ra4")
     @GroupThreads(4)
     fun acquireReleaseCycle4() = testCycle()
-}
+}