vendor: Update vendored sources to igraph/igraph@5216243

refactor: cleaner workaround in plfit for Windows 11 SDK bug where NAN is defined in a non-constant manner

Author: krlmlr

src/vendor/cigraph/vendor/plfit/hzeta.c

@@ -46,23 +46,23 @@
 #define _USE_MATH_DEFINES
 #endif
 
-#include <math.h>
-#include <stdio.h>
-#include "hzeta.h"
-#include "plfit_error.h"
-
 /* Work around bug in some Windows SDK / MSVC versions where NAN is not a
  * constant expression, triggering an error in the definition of
  * hsl_sf_hzeta_eulermaclaurin_series_coeffs[] and
  * hsl_sf_hzeta_eulermaclaurin_series_majorantratios[] below.
  * We re-define NAN to the value it had in earlier MSVC versions.
  * See https://github.com/igraph/igraph/issues/2701
+ * and https://developercommunity.visualstudio.com/t/NAN-is-no-longer-compile-time-constant-i/10688907
  */
 #ifdef _MSC_VER
-#undef NAN
-#define NAN (-(float)(((float)(1e+300 * 1e+300)) * 0.0F))
+#define _UCRT_NOISY_NAN
 #endif
 
+#include <math.h>
+#include <stdio.h>
+#include "hzeta.h"
+#include "plfit_error.h"
+
 /* imported from gsl_machine.h */
 
 #define GSL_LOG_DBL_MIN (-7.0839641853226408e+02)

src/vendor/igraph_version.h

@@ -28,11 +28,11 @@
 
 __BEGIN_DECLS
 
-#define IGRAPH_VERSION "0.10.15-46-g622f331dc"
+#define IGRAPH_VERSION "0.10.15-47-g521624378"
 #define IGRAPH_VERSION_MAJOR 0
 #define IGRAPH_VERSION_MINOR 10
 #define IGRAPH_VERSION_PATCH 15
-#define IGRAPH_VERSION_PRERELEASE "46-g622f331dc"
+#define IGRAPH_VERSION_PRERELEASE "47-g521624378"
 
 IGRAPH_EXPORT void igraph_version(const char **version_string,
                                   int *major,