Move usage text into usage_str var

For consistency and readability.

Note: This also makes exactly one extra blank line be printed at the end
of every usage text, which is currently only done in the following
files:

* src/fcopy/main.c
* src/fnettrace-dns/main.c
* src/fnettrace-icmp/main.c
* src/fnettrace-sni/main.c
* src/fnettrace/main.c
* src/profstats/main.c

1 files changed, 6 insertions, 5 deletions

diff --git a/src/fldd/main.c b/src/fldd/main.c
index 63398ce2e..c28cad72e 100644
--- a/src/fldd/main.c
+++ b/src/fldd/main.c
@@ -282,12 +282,13 @@ static void walk_directory(const char *dirname) {
         }
 }
 
-
+static const char *const usage_str =
+        "Usage: fldd program_or_directory [file]\n"
+        "Print a list of libraries used by program or store it in the file.\n"
+        "Print a list of libraries used by all .so files in a directory or store it in the file.\n";
 
 static void usage(void) {
-        printf("Usage: fldd program_or_directory [file]\n");
-        printf("Print a list of libraries used by program or store it in the file.\n");
-        printf("Print a list of libraries used by all .so files in a directory or store it in the file.\n");
+        puts(usage_str);
 }
 
 int main(int argc, char **argv) {
@@ -363,4 +364,4 @@ int main(void) {
         printf("Sorry, private lib is disabled in this build\n");
         return 0;
 }
-#endif
\ No newline at end of file
+#endif