Add cstdint header include for OpenEXR

Author: Kingstom

CMakeLists.txt

@@ -57,7 +57,7 @@ function (CHECK_EXT NAME DIR HASH)
   endif (GIT_FOUND)
 endfunction ()
 
-check_ext ("OpenEXR" "openexr/OpenEXR" 5cfb5dab6dfada731586b0281bdb15ee75e26782)
+check_ext ("OpenEXR" "openexr/OpenEXR" ff21ca074b31bfc46532f858fcfffcd9d0bc8f20)
 check_ext ("OpenVDB" "openvdb/nanovdb" 414bed84c2fc22e188eac7b611aa85c7edd7a5a9)
 check_ext ("Ptex" "ptex/src" 4cd8e9a6db2b06e478dfbbd8c26eb6df97f84483)
 check_ext ("double-conversion" "double-conversion/cmake" cc1f75a114aca8d2af69f73a5a959aecbab0e87a)
@@ -402,7 +402,7 @@ int main() {
    fstat(fd, &s);
    size_t len = s.st_size;
    void *ptr = mmap(0, len, PROT_READ, MAP_FILE | MAP_SHARED, fd, 0);
-   munmap(ptr, len);   
+   munmap(ptr, len);
 }
 " HAVE_MMAP)
 
@@ -534,7 +534,7 @@ set (PBRT_SOURCE
 
   src/pbrt/cmd/pspec_gpu.cpp
   )
-  
+
 if (MSVC)
     set (PBRT_SOURCE ${PBRT_SOURCE} src/pbrt/visualstudio.natvis)
 endif ()
@@ -561,7 +561,7 @@ set (PBRT_SOURCE_HEADERS
   src/pbrt/scene.h
   src/pbrt/shapes.h
   src/pbrt/textures.h
-  )  
+  )
 
 SET (PBRT_CPU_SOURCE
   src/pbrt/cpu/aggregates.cpp
@@ -919,7 +919,7 @@ target_link_libraries (rgb2spec_opt PRIVATE ${CMAKE_THREAD_LIBS_INIT} pbrt_opt p
 
 if (NOT PBRT_USE_PREGENERATED_RGB_TO_SPECTRUM_TABLES)
   add_custom_command (OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/rgbspectrum_aces.cpp
-      COMMAND rgb2spec_opt 64 ${CMAKE_CURRENT_BINARY_DIR}/rgbspectrum_aces.cpp ACES2065_1 
+      COMMAND rgb2spec_opt 64 ${CMAKE_CURRENT_BINARY_DIR}/rgbspectrum_aces.cpp ACES2065_1
       DEPENDS rgb2spec_opt)
 
   add_custom_command (OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/rgbspectrum_dci_p3.cpp