Linux: Fix build for Ubuntu 26.04 with gcc 15.

svn:sync-xref-src-repo-rev: r173846

Author: galitsyn-oracle

src/VBox/ExtPacks/VBoxDTrace/onnv/lib/libdtrace/common/dt_program.c

@@ -590,7 +590,7 @@ dtrace_program_header(dtrace_hdl_t *dtp, FILE *out, const char *fname)
 	char *mfname VBDTMSC(NULL), *p;
 
 	if (fname != NULL) {
-		if ((p = strrchr(fname, '/')) != NULL)
+		if ((p = (char *)strrchr(fname, '/')) != NULL)
 			fname = p + 1;
 
 		mfname = alloca(strlen(fname) + 1);