fix the free calls in android string (#1490)

Author: altalk23

loader/src/c++stl/string.cpp

@@ -48,32 +48,26 @@ namespace gd {
 
     string& string::operator=(string const& other) {
         if (this != &other) {
-            impl.free();
             impl.setStorage(other);
         }
         return *this;
     }
     string& string::operator=(string&& other) {
         // TODO: do this better :-)
-        impl.free();
         impl.setStorage(other);
-        implFor(other).free();
         implFor(other).setEmpty();
         return *this;
     }
     string& string::operator=(char const* other) {
-        impl.free();
         impl.setStorage(other);
         return *this;
     }
     string& string::operator=(std::string const& other) {
-        impl.free();
         impl.setStorage(other);
         return *this;
     }
 
     void string::clear() {
-        impl.free();
         impl.setEmpty();
     }
 

loader/src/platform/android/gdstdlib.cpp

@@ -82,6 +82,8 @@ void setEmptyInternalString(gd::string* str) {
 
 namespace geode::stl {
     void StringImpl::setEmpty() {
+        this->free();
+        
         data.m_data = emptyInternalString();
     }