updated declaration of LZ4F_freeDecompressionContext

appveyor.yml

@@ -52,6 +52,7 @@ build_script:
         make -C tests fullbench CC=clang MOREFLAGS="--target=x86_64-w64-mingw32 -Werror -Wconversion -Wno-sign-conversion"
       )
     )
+  - if [%COMPILER%]==[gcc] (COPY tests\fullbench.exe programs\)
   - if [%COMPILER%]==[visual] (
       ECHO *** &&
       ECHO *** Building Visual Studio 2010 %PLATFORM%\%CONFIGURATION% &&
@@ -84,6 +85,5 @@ test_script:
       lz4 -i1b10 lz4.exe &&
       lz4 -i1b15 lz4.exe &&
       echo lz4 tested && 
-      CD ..\tests &&
       fullbench.exe -i1 fullbench.exe
     )

lib/lz4frame.h

@@ -274,7 +274,7 @@ typedef struct {
  * That is, it should be == 0 if decompression has been completed fully and correctly.
  */
 LZ4FLIB_API LZ4F_errorCode_t LZ4F_createDecompressionContext(LZ4F_dctx** dctxPtr, unsigned version);
-LZ4FLIB_API LZ4F_errorCode_t LZ4F_freeDecompressionContext(LZ4F_dctx* dctx);
+LZ4FLIB_API LZ4F_errorCode_t LZ4F_freeDecompressionContext(LZ4F_dctx* const dctx);
 
 
 /*======   Decompression   ======*/