musl-legacy-compat: add fflush call to error().

The testsuite for elfutils expects things printed to stdout before
calling error() to appear before the error message; glibc implements
this by calling fflush(stdout) after checking the stream is still valid.
Here, we will simply flush all output streams.

srcpkgs/musl-legacy-compat/files/error.h

@@ -13,6 +13,10 @@ static unsigned int error_message_count = 0;
 
 static inline void error(int status, int errnum, const char* format, ...)
 {
+	/* should be fflush(stdout), but that's unspecified if stdout has been closed;
+	 * stick with fflush(NULL) for simplicity (glibc checks if the fd is still valid) */
+	fflush(NULL);
+
 	va_list ap;
 	fprintf(stderr, "%s: ", program_invocation_name);
 	va_start(ap, format);

srcpkgs/musl-legacy-compat/template

@@ -1,7 +1,7 @@
 # Template file for 'musl-legacy-compat'
 pkgname=musl-legacy-compat
 version=0.4
-revision=1
+revision=2
 archs="*-musl"
 bootstrap=yes
 short_desc="Legacy compatibility headers for the musl libc"