[PATCH] Rewrite some function exit paths to avoid "unreachable code" traps

[Alex Riesen <raa.lkml@gmail.com>]

Noticed by Guido Ostkamp for Sun's Workshop cc.

Originally-by: Guido Ostkamp <git@ostkamp.fastmail.fm>
Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
---
Guido Ostkamp, Fri, Nov 16, 2007 23:52:01 +0100:
>
> What about the xdiff/xdiffi.c problem that should also be solved?
>

Here you go.

 builtin-apply.c |    5 +++--
 utf8.c          |    2 +-
 xdiff/xdiffi.c  |   14 +++++++-------
 xdiff/xutils.c  |    5 ++---
 4 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/builtin-apply.c b/builtin-apply.c
index 8edcc08..6267396 100644
--- a/builtin-apply.c
+++ b/builtin-apply.c
@@ -668,13 +668,13 @@ static char *git_header_name(char *line, int llen)
 		default:
 			continue;
 		case '\n':
-			return NULL;
+			goto eol;
 		case '\t': case ' ':
 			second = name+len;
 			for (;;) {
 				char c = *second++;
 				if (c == '\n')
-					return NULL;
+					goto eol;
 				if (c == '/')
 					break;
 			}
@@ -683,6 +683,7 @@ static char *git_header_name(char *line, int llen)
 			}
 		}
 	}
+eol:
 	return NULL;
 }
 
diff --git a/utf8.c b/utf8.c
index 8095a71..50c46af 100644
--- a/utf8.c
+++ b/utf8.c
@@ -262,7 +262,7 @@ int print_wrapped_text(const char *text, int indent, int indent2, int width)
 					print_spaces(indent);
 				fwrite(start, text - start, 1, stdout);
 				if (!c)
-					return w;
+					break;
 				else if (c == '\t')
 					w |= 0x07;
 				space = text;
diff --git a/xdiff/xdiffi.c b/xdiff/xdiffi.c
index 5cb7171..365d768 100644
--- a/xdiff/xdiffi.c
+++ b/xdiff/xdiffi.c
@@ -110,7 +110,7 @@ static long xdl_split(unsigned long const *ha1, long off1, long lim1,
 				spl->i1 = i1;
 				spl->i2 = i2;
 				spl->min_lo = spl->min_hi = 1;
-				return ec;
+				goto end;
 			}
 		}
 
@@ -145,7 +145,7 @@ static long xdl_split(unsigned long const *ha1, long off1, long lim1,
 				spl->i1 = i1;
 				spl->i2 = i2;
 				spl->min_lo = spl->min_hi = 1;
-				return ec;
+				goto end;
 			}
 		}
 
@@ -184,7 +184,7 @@ static long xdl_split(unsigned long const *ha1, long off1, long lim1,
 			if (best > 0) {
 				spl->min_lo = 1;
 				spl->min_hi = 0;
-				return ec;
+				goto end;
 			}
 
 			for (best = 0, d = bmax; d >= bmin; d -= 2) {
@@ -208,7 +208,7 @@ static long xdl_split(unsigned long const *ha1, long off1, long lim1,
 			if (best > 0) {
 				spl->min_lo = 0;
 				spl->min_hi = 1;
-				return ec;
+				goto end;
 			}
 		}
 
@@ -254,11 +254,11 @@ static long xdl_split(unsigned long const *ha1, long off1, long lim1,
 				spl->min_lo = 0;
 				spl->min_hi = 1;
 			}
-			return ec;
+			goto end;
 		}
 	}
-
-	return -1;
+end:
+	return ec;
 }
 
 
diff --git a/xdiff/xutils.c b/xdiff/xutils.c
index 2ade97b..533ff76 100644
--- a/xdiff/xutils.c
+++ b/xdiff/xutils.c
@@ -230,10 +230,9 @@ int xdl_recmatch(const char *l1, long s1, const char *l2, long s2, long flags)
 			i2++;
 		}
 		return i1 >= s1 && i2 >= s2;
-	} else
-		return s1 == s2 && !memcmp(l1, l2, s1);
+	}
 
-	return 0;
+	return s1 == s2 && !memcmp(l1, l2, s1);
 }
 
 static unsigned long xdl_hash_record_with_whitespace(char const **data,
-- 
1.5.3.5.750.g9f37