login_fingerprint: back is a FILE *, so use fprintf(back, ...), not printf

Fixes build with llvm22

ok robert (maintainer)

sysutils/login_fingerprint/Makefile

@@ -1,7 +1,7 @@
 COMMENT=	provide fingerprint authentication
 
 DISTNAME=	login_fingerprint-1.2
-REVISION=	6
+REVISION=	7
 CATEGORIES=    	sysutils
 
 SITES=		http://blade2k.humppa.hu/

sysutils/login_fingerprint/patches/patch-login_fingerprint_c

@@ -0,0 +1,16 @@
+login_fingerprint.c:148:10: error: incompatible pointer types passing 'FILE *' (aka 'struct __sFILE *') to parameter of type 'const char *' [-Wincompatible-pointer-types]
+  148 |                 printf(back, BI_SILENT "\n");
+      |                        ^~~~
+
+Index: login_fingerprint.c
+--- login_fingerprint.c.orig
++++ login_fingerprint.c
+@@ -145,7 +145,7 @@ main(int argc, char **argv)
+ 	}
+ 
+ 	if (strcmp(service, "challenge") == 0) {
+-		printf(back, BI_SILENT "\n");
++		fprintf(back, BI_SILENT "\n");
+ 		exit(0);
+ 	}
+