devel/libinjection: Fix build on 14-CURRENT

libinjection_sqli.c:1200:33: error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes]
const char* libinjection_version()
                                ^
                                 void
1 error generated.

Reference:	https://pkg-status.freebsd.org/beefy18/data/main-amd64-default/pdf5b273c8e36_s83d5725005/logs/libinjection-3.10.0_1.log

devel/libinjection/files/patch-libinjection_sqli.c

@@ -0,0 +1,11 @@
+--- libinjection_sqli.c.orig	2017-05-21 20:44:26 UTC
++++ libinjection_sqli.c
+@@ -1197,7 +1197,7 @@ static size_t parse_number(struct libinjection_sqli_st
+  * without having to regenerated the SWIG (or other binding) in minor
+  * releases.
+  */
+-const char* libinjection_version()
++const char* libinjection_version(void)
+ {
+     return LIBINJECTION_VERSION;
+ }