Changed libc structure, shouldn't've added anything new

libc/string/strchr.c

@@ -0,0 +1,10 @@
+#include <string.h>
+
+char* strchr(const char* str, char c) {
+    const char* s = str;
+    while (*s != '\0' && *s != c) { s++; }
+    return (*s == c) ? (char*)s : NULL;
+}
+
+char* strrchr(const char* str, char c) { return NULL; } // TODO
+