libcallnr: Use int, not int64_t, as the return type for Vim compat

Vim's documentation simply states that libcallnr() should be used "for a
function that returns an int".  Based on the tests, code, and common
syscall interfaces, this should likely be taken literally instead of
trying to apply some well-defined type lipstick.

Notably, this change fixes Test_libcall_libcallnr on hppa (a 32-bit
big-endian system).

1 files changed, 4 insertions, 4 deletions

diff --git a/src/nvim/os/dl.c b/src/nvim/os/dl.c
index f0fadb16f2..2783411574 100644
--- a/src/nvim/os/dl.c
+++ b/src/nvim/os/dl.c
@@ -19,15 +19,15 @@
 /// string -> int
 typedef void (*gen_fn)(void);
 typedef const char *(*str_str_fn)(const char *str);
-typedef int64_t (*str_int_fn)(const char *str);
+typedef int (*str_int_fn)(const char *str);
 typedef const char *(*int_str_fn)(int64_t i);
-typedef int64_t (*int_int_fn)(int64_t i);
+typedef int (*int_int_fn)(int64_t i);
 
 /// os_libcall - call a function in a dynamic loadable library
 ///
 /// an example of calling a function that takes a string and returns an int:
 ///
-///   int64_t int_out = 0;
+///   int int_out = 0;
 ///   os_libcall("mylib.so", "somefn", "string-argument", 0, NULL, &int_out);
 ///
 /// @param libname the name of the library to load (e.g.: libsomething.so)
@@ -43,7 +43,7 @@ bool os_libcall(const char *libname,
                 const char *argv,
                 int64_t argi,
                 char **str_out,
-                int64_t *int_out)
+                int *int_out)
 {
   if (!libname || !funcname) {
     return false;