Use single-line string literals.

Signed-off-by: Guido Vranken <guidovranken@gmail.com>

library/sha512.c

diff --git a/library/sha512.c b/library/sha512.c
index a3a2852..e881198 100644
--- a/library/sha512.c
+++ b/library/sha512.c
@@ -516,8 +516,7 @@
 static const unsigned char sha512_test_buf[3][113] =
 {
     { "abc" },
-    { ("abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"
-      "hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu") },
+    { "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu" },
     { "" }
 };