[fusl] clang-format fusl

fusl/src/stdlib/atoi.c

 #include <stdlib.h>
 #include <ctype.h>
 
-int atoi(const char *s)
-{
-        int n=0, neg=0;
-        while (isspace(*s)) s++;
-        switch (*s) {
-        case '-': neg=1;
-        case '+': s++;
-        }
-        /* Compute n as a negative number to avoid overflow on INT_MIN */
-        while (isdigit(*s))
-                n = 10*n - (*s++ - '0');
-        return neg ? n : -n;
+int atoi(const char* s) {
+  int n = 0, neg = 0;
+  while (isspace(*s))
+    s++;
+  switch (*s) {
+    case '-':
+      neg = 1;
+    case '+':
+      s++;
+  }
+  /* Compute n as a negative number to avoid overflow on INT_MIN */
+  while (isdigit(*s))
+    n = 10 * n - (*s++ - '0');
+  return neg ? n : -n;
 }