address few comments

Author: devnexen

compiler-rt/lib/sanitizer_common/sanitizer_libc.cpp

@@ -53,8 +53,11 @@ void *internal_memccpy(void *dest, const void *src, int c, uptr n) {
   char *d = (char *)dest;
   const char *s = (const char *)src;
   uptr i = 0;
-  for (; i < n && s[i] != c; ++i) d[i] = s[i];
-  if (n > 0 && i < n - 1)
+  for (; i < n; ++i) {
+    d[i] = s[i];
+    if (s[i] == c) break;
+  }
+  if (n > 0 && i < n)
     return d + i + 1;
   return nullptr;
 }

compiler-rt/test/memprof/TestCases/memprof_memccpy.cpp

@@ -7,9 +7,9 @@
 
 int main() {
   char *p = strdup("memccpy");
-  char *d = (char *)malloc(4);
+  char *d = (char *)malloc(5);
   void *r = memccpy(d, p, 'c', 8);
-  int cmp = memcmp(r, "mem", 3);
+  int cmp = memcmp(r, "memc", 4);
   free(d);
   free(p);
   return cmp;