Fix #231 (#232)

The wrong CMake variable was used for setting the CPPTRACE_VERSION_*
variables

Fixes #231

Author: azais-corentin

CMakeLists.txt

@@ -176,9 +176,9 @@ target_compile_options(
   ${warning_options}
 )
 
-set(CPPTRACE_VERSION_MAJOR ${CMAKE_PROJECT_VERSION_MAJOR})
-set(CPPTRACE_VERSION_MINOR ${CMAKE_PROJECT_VERSION_MINOR})
-set(CPPTRACE_VERSION_PATCH ${CMAKE_PROJECT_VERSION_PATCH})
+set(CPPTRACE_VERSION_MAJOR ${PROJECT_VERSION_MAJOR})
+set(CPPTRACE_VERSION_MINOR ${PROJECT_VERSION_MINOR})
+set(CPPTRACE_VERSION_PATCH ${PROJECT_VERSION_PATCH})
 configure_file("${PROJECT_SOURCE_DIR}/cmake/in/version-hpp.in" "${PROJECT_BINARY_DIR}/include/cpptrace/version.hpp")
 
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