Added a newline at the end of the file to make the compiler stop complaining

platforms/cuda/src/kernels/cudaCompact.h

@@ -41,4 +41,4 @@ void destroyCompactionPlan(compactionPlan& d);
 extern "C"
 int compactStream(const compactionPlan& d,unsigned int* dOut,const unsigned int* dIn,const unsigned int* dValid,size_t len,size_t* dNumValid);
 
-#endif // __OPENMM_CUDACOMPACT_H__
\ No newline at end of file
+#endif // __OPENMM_CUDACOMPACT_H__