File rdkit-gcc15.patch of Package rdkit

fix compile error w/ gcc15

--- a/Code/ML/Cluster/Murtagh/hc.c	2025-01-31 13:55:45.000000000 +0100
+++ b/Code/ML/Cluster/Murtagh/hc.c	2025-06-23 12:07:51.672655394 +0200
@@ -50,7 +50,7 @@
   static integer i2, j2, jj, im, jm;
   static doublereal xx;
   static integer ind, ncl;
-  extern integer ioffset_();
+  integer ioffset_(integer *, integer *, integer *);
   static integer ind1, ind2, ind3;
 
   /* Parameter adjustments */
--- a/Code/ML/Cluster/Murtagh/hcdriver.c	2025-01-31 13:55:45.000000000 +0100
+++ b/Code/ML/Cluster/Murtagh/hcdriver.c	2025-06-23 12:07:51.672655394 +0200
@@ -15,7 +15,7 @@
 {
   static logical *flag__;
   static doublereal *membr, *disnn;
-  extern /* Subroutine */ int hc_();
+  extern int hc_(integer *, integer *, integer *, integer *, integer *, doublereal *, doublereal *, integer *, doublereal *, logical *, doublereal *);
   static integer *nn;
   flag__ = (logical *)malloc(*n * sizeof(logical));
   membr = (doublereal *)malloc(*n * sizeof(doublereal));