[PATCH 4/4] Suppress "statement not reached" warnings under Sun Studio

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

Sun Studio 12 Update 1's brain will melt on these two occurances of
using "goto" to jump into a loop. It'll emit these warnings:

    "read-cache.c", line 761: warning: statement not reached (E_STATEMENT_NOT_REACHED)
    "xdiff/xutils.c", line 194: warning: statement not reached (E_STATEMENT_NOT_REACHED)

Suppress these warnings by using a Sun Studio specific pragma
directive to turn them off, but only do so if __sun is defined, which
is the macro Sun Studio uses to identify itself under both its C and
C++ variants, see http://developers.sun.com/sunstudio/products/faqs/cpp.html

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 read-cache.c   |    6 ++++++
 xdiff/xutils.c |    6 ++++++
 2 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/read-cache.c b/read-cache.c
index a51bba1..0a4e895 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -758,7 +758,13 @@ int verify_path(const char *path)
 		return 0;
 
 	goto inside;
+#ifdef __sun
+#	pragma error_messages (off, E_STATEMENT_NOT_REACHED)
+#endif
 	for (;;) {
+#ifdef __sun
+#	pragma error_messages (on, E_STATEMENT_NOT_REACHED)
+#endif
 		if (!c)
 			return 1;
 		if (is_dir_sep(c)) {
diff --git a/xdiff/xutils.c b/xdiff/xutils.c
index 0de084e..62c3567 100644
--- a/xdiff/xutils.c
+++ b/xdiff/xutils.c
@@ -191,7 +191,13 @@ int xdl_recmatch(const char *l1, long s1, const char *l2, long s2, long flags)
 	 */
 	if (flags & XDF_IGNORE_WHITESPACE) {
 		goto skip_ws;
+#ifdef __sun
+#	pragma error_messages (off, E_STATEMENT_NOT_REACHED)
+#endif
 		while (i1 < s1 && i2 < s2) {
+#ifdef __sun
+#	pragma error_messages (on, E_STATEMENT_NOT_REACHED)
+#endif
 			if (l1[i1++] != l2[i2++])
 				return 0;
 		skip_ws:
-- 
1.7.7.3