NSO: As in new-analysis branch - symtab is optional

Author: SamboyCoding

LibCpp2IL/NintendoSwitch/NsoFile.cs

@@ -182,12 +182,26 @@ private void ReadSymbolTable()
         {
             LibLogger.Verbose($"\tReading NSO symbol table...");
 
-            var hash = GetDynamicEntry(ElfDynamicType.DT_HASH) ?? throw new("No hash table found in NSO");
+            var hash = GetDynamicEntry(ElfDynamicType.DT_HASH);
+
+            if (hash == null)
+            {
+                LibLogger.WarnNewline("\tNo DT_HASH found in NSO, symbols will not be resolved");
+                return;
+            }
+            
             Position = MapVirtualAddressToRaw(hash.Value);
             ReadUInt32(); //Ignored
             var symbolCount = ReadUInt32();
 
-            var symTab = GetDynamicEntry(ElfDynamicType.DT_SYMTAB) ?? throw new("No symbol table found in NSO");
+            var symTab = GetDynamicEntry(ElfDynamicType.DT_SYMTAB);
+            
+            if (symTab == null)
+            {
+                LibLogger.WarnNewline("\tNo DT_SYMTAB found in NSO, symbols will not be resolved");
+                return;
+            }
+            
             _symbolTable = ReadReadableArrayAtVirtualAddress<ElfDynamicSymbol64>((ulong) MapVirtualAddressToRaw(symTab.Value), symbolCount);
 
             LibLogger.VerboseNewline($"Got {_symbolTable.Length} symbols");
@@ -375,4 +389,4 @@ public override ulong GetVirtualAddressOfPrimaryExecutableSection()
             return _header.TextSegment.MemoryOffset;
         }
     }
-}
+}