fgetln is a BSDism; replace it with more portable code.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89140 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/c-index-test/c-index-test.c b/tools/c-index-test/c-index-test.c
index 1ef27e6..f5ddfa6 100644
--- a/tools/c-index-test/c-index-test.c
+++ b/tools/c-index-test/c-index-test.c
@@ -212,12 +212,15 @@
   start_col = last_col = 1;
   
   while (!feof(fp)) {
-    size_t len;
-    const char *buf;
-        
-    if ((buf = fgetln(fp, &len)) == NULL)
-      break;
-    
+    size_t len = 0;
+    int c;
+
+    while ((c = fgetc(fp)) != EOF) {
+      len++;
+      if (c == '\n')
+        break;
+    }
+
     ++line;
     
     for (i = 0; i < len ; ++i) {